WINDOWS-NT-PERFORMANCE: View SNMP OID List / Download MIB

Available Bytes displays the size of the virtual memory currently on the Zeroed, Free, and Standby lists. Zeroed and Free memory is ready for use, with Zeroed memory cleared to zeros. Standby memory is memory removed from a process's Working Set but still available. Notice that this is an instantaneous count, not an average over the time interval.

Committed Bytes displays the size of virtual memory (in bytes) that has been Committed (as opposed to simply reserved). Committed memory must have backing (i.e., disk) storage available, or must be assured never to need disk storage (because main memory is large enough to hold it.) Notice that this is an instantaneous count, not an average over the time interval.

Commit Limit is the size (in bytes) of virtual memory that can be committed without having to extend the paging file(s). If the paging file(s) can be extended, this is a soft limit.

Page Faults/sec is a count of the Page Faults in the processor. A page fault occurs when a process refers to a virtual memory page that is not in its Working Set in main memory. A Page Fault will not cause the page to be fetched from disk if that page is on the standby list, and hence already in main memory, or if it is in use by another process with whom the page is shared.

Write Copies/sec is the number of page faults that have been satisfied by making a copy of a page when an attempt to write to the page is made. This is an economical way of sharing data since the copy of the page is only made on an attempt to write to the page; otherwise, the page is shared.

Transition Faults/sec is the number of page faults resolved by recovering pages that were in transition, i.e., being written to disk at the time of the page fault. The pages were recovered without additional disk activity.

Cache Faults occur whenever the Cache manager does not find a file's page in the immediate Cache and must ask the memory manager to locate the page elsewhere in memory or on the disk so that it can be loaded into the immediate Cache.

Demand Zero Faults are the number of page faults for pages that must be filled with zeros before the fault is satisfied. If the Zeroed list is not empty, the fault can be resolved by removing a page from the Zeroed list.

Pages/sec is the number of pages read from the disk or written to the disk to resolve memory references to pages that were not in memory at the time of the reference. This is the sum of Pages Input/sec and Pages Output/sec. This counter includes paging traffic on behalf of the system Cache to access file data for applications. This value also includes the pages to/from non-cached mapped memory files. This is the primary counter to observe if you are concerned about excessive memory pressure (that is, thrashing), and the excessive paging that may result.

Pages Input/sec is the number of pages read from the disk to resolve memory references to pages that were not in memory at the time of the reference. This counter includes paging traffic on behalf of the system Cache to access file data for applications. This is an important counter to observe if you are concerned about excessive memory pressure (that is, thrashing), and the excessive paging that may result.

Page Reads/sec is the number of times the disk was read to retrieve pages of virtual memory necessary to resolve page faults. Multiple pages can be read during a disk read operation.

Pages Output/sec is a count of the number of pages that are written to disk because the pages have been modified in main memory.

Page Writes/sec is a count of the number of times pages have been written to the disk because they were changed since last retrieved. Each such write operation may transfer a number of pages.

Pool Paged Bytes is the number of bytes in the Paged Pool, a system memory area where space is acquired by operating system components as they accomplish their appointed tasks. Paged Pool pages can be paged out to the paging file when not accessed by the system for sustained periods of time.

Pool Nonpaged Bytes is the number of bytes in the Nonpaged Pool, a system memory area where space is acquired by operating system components as they accomplish their appointed tasks. Nonpaged Pool pages cannot be paged out to the paging file, but instead remain in main memory as long as they are allocated.

Pool Paged Allocs is the number of calls to allocate space in the system Paged Pool. Paged Pool is a system memory area where space is acquired by operating system components as they accomplish their appointed tasks. Paged Pool pages can be paged out to the paging file when not accessed by the system for sustained periods of time.

Pool Nonpaged Allocs is the number of calls to allocate space in the system Nonpaged Pool. Nonpaged Pool is a system memory area where space is acquired by operating system components as they accomplish their appointed tasks. Nonpaged Pool pages cannot be paged out to the paging file, but instead remain in main memory as long as they are allocated.

The number of Page Table Entries not currently in use by the system.

Cache Bytes measures the number of bytes currently in use by the system Cache. The system Cache is used to buffer data retrieved from disk or LAN. The system Cache uses memory not in use by active processes in the computer.

Cache Bytes Peak measures the maximum number of bytes used by the system Cache. The system Cache is used to buffer data retrieved from disk or LAN. The system Cache uses memory not in use by active processes in the computer.

Pool Paged Resident Bytes is the size of paged Pool resident in core memory. This is the actual cost of the paged Pool allocation, since this is actively in use and using real physical memory.

System Code Total Bytes is the number of bytes of pagable pages in ntoskrnl.exe, hal.dll, and the boot drivers and file systems loaded by ntldr/osloader.

System Code Resident Bytes is the number of bytes of System Code Total Bytes currently resident in core memory. This is the code working set of the pagable executive. In addition to this, there is another ~300k bytes of non-paged kernel code.

System Driver Total Bytes is the number of bytes of pagable pages in all other loaded device drivers.

System Driver Resident Bytes is the number of bytes of System Driver Total Bytes currently resident in core memory. This number is the code working set of the pagable drivers. In addition to this, there is another ~700k bytes of non-paged driver code.

System Cache Resident Bytes is the number of bytes currently resident in the global disk cache.

% Committed Bytes In Use is the ratio of the Commited Bytes to the Commit Limit. This represents the amount of available virtual memory in use. Note that the Commit Limit may change if the paging file is extended. This is an instantaneous value, not an average.

A table containing performance information for instances of 'processor' objects.

Performance information for one particular instance of 'processor' object.

Index.

Instance name.

Processor Time is expressed as a percentage of the elapsed time that a processor is busy executing a non-Idle thread. It can be viewed as the fraction of the time spent doing useful work. Each processor is assigned an Idle thread in the Idle process which consumes those unproductive processor cycles not used by any other threads.

User Time is the percentage of processor time spent in User Mode in non-Idle threads. All application code and subsystem code execute in User Mode. The graphics engine, graphics device drivers, printer device drivers, and the window manager also execute in User Mode. Code executing in User Mode cannot damage the integrity of the Windows NT Executive, Kernel, and device drivers. Unlike some early operating systems, Windows NT uses process boundaries for subsystem protection in addition to the traditional protection of User and Privileged modes. These subsystem processes provide additional protection. Therefore, some work done by Windows NT on behalf of your application may appear in other subsystem processes in addition to the Privileged Time in your process.

Privileged Time is the percentage of processor time spent in Privileged Mode in non-Idle threads. The Windows NT service layer, the Executive routines, and the Windows NT Kernel execute in Privileged Mode. Device drivers for most devices other than graphics adapters and printers also execute in Privileged Mode. Unlike some early operating systems, Windows NT uses process boundaries for subsystem protection in addition to the traditional protection of User and Privileged modes. These subsystem processes provide additional protection. Therefore, some work done by Windows NT on behalf of your application may appear in other subsystem processes in addition to the Privileged Time in your process.

Interrupts/sec is the number of device interrupts the processor is experiencing. A device interrupts the processor when it has completed a task or when it otherwise requires attention. Normal thread execution is suspended during interrupts. An interrupt may cause the processor to switch to another, higher priority thread. Clock interrupts are frequent and periodic and create a background of interrupt activity.

% DPC Time is the percentage of elapsed time that the Processor spent in Deferred Procedure Calls. When a hardware device interrupts the Processor, the Interrupt Handler may elect to execute the majority of its work in a DPC. DPC's run at lower priority than Interrupts, and so permit Interrupts to occur while DPC's being execute. Deferred Procedure Calls are executed in Privileged Mode, so this is a component of Processor: % Privileged Time. This counter can help determine the source of excessive time being spent in Privileged Mode.

% Interrupt Time is the percentage of elapsed time that the Processor spent handling hardware Interrupts. When a hardware device interrupts the Processor, the Interrupt Handler will execute to handle the condition, usually by signaling I/O completion and possibly issuing another pending I/O request. Some of this work may be done in a Deferred Procedure Call (see % DPC Time.) However, time spent in DPC's is not counted as time in Interrupts. Interrupts are executed in Privileged Mode, so this is a component of Processor: % Privileged Time. This counter can help determine the source of excessive time being spent in Privileged Mode.

DPCs Queued/sec is the rate DPC objects are queued to this processor's DPC queue.

DPC Rate is the average rate DPC objects are queued to this processor's DPC queue per clock tick.

DPC Bypasses/sec is the rate Dispatch interrupts were short-circuited.

APC Bypasses/sec is the rate kernel APC interrupts were short-circuited.

A table containing performance information for instances of 'network-Interface' objects.

Performance information for one particular instance of 'network-Interface' object.

Index.

Instance name.

Bytes Total/sec is the rate that bytes are sent and received on the interface, including framing characters.

Packets/sec is the rate that packets are sent and received on the network interface.

Packets Received/sec is the rate that packets are received on the network interface.

Packets Sent/sec is the rate that packets are sent on the network interface.

Current Bandwidth is an estimate of the interface's current bandwidth in bits per second (bps). For interfaces that do not vary in bandwidth or for those where no accurate estimation can be made, this value is the nominal bandwidth.

Bytes Received/sec is the rate that bytes are received on the interface, including framing characters.

Packets Received Unicast/sec is the rate that (subnet) unicast packets are delivered to a higher-layer protocol.

Packets Received Non-Unicast/sec is the rate that non-unicast (i.e., subnet broadcast or subnet multicast) packets are delivered to a higher-layer protocol.

Packets Received Discarded is the number of inbound packets that were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space.

Packets Received Errors is the number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.

Packets Received Unknown is the number of packets received via the interface that were discarded because of an unknown or unsupported protocol.

Bytes Sent/sec is the rate that bytes are sent on the interface, including framing characters.

Packets Sent Unicast/sec is the rate that packets are requested to be transmitted to subnet-unicast addresses by higher-level protocols. The rate includes the packets that were discarded or not sent.

Packets Sent Non-Unicast/sec is the rate that packets are requested to be transmitted to non-unicast (i.e., subnet broadcast or subnet multicast) addresses by higher-level protocols. The rate includes the packets that were discarded or not sent.

Packets Outbound Discarded is the number of outbound packets that were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a packet could be to free up buffer space.

Packets Outbound Errors is the number of outbound packets that could not be transmitted because of errors.

Output Queue Length is the length of the output packet queue (in packets.) If this is longer than 2, delays are being experienced and the bottleneck should be found and eliminated if possible. Since the requests are queued by NDIS in this implementations, this will always be 0.

A table containing performance information for instances of 'physicalDisk' objects.

Performance information for one particular instance of 'physicalDisk' object.

Index.

Instance name.

Current Disk Queue Length is the number of requests outstanding on the disk at the time the performance data is collected. It includes requests in service at the time of the snapshot. This is an instantaneous length, not an average over the time interval. Multi-spindle disk devices can have multiple requests active at one time, but other concurrent requests are awaiting service. This counter may reflect a transitory high or low queue length, but if there is a sustained load on the disk drive, it is likely that this will be consistently high. Requests are experiencing delays proportional to the length of this queue minus the number of spindles on the disks. This difference should average less than 2 for good performance.

Disk Time is the percentage of elapsed time that the selected disk drive is busy servicing read or write requests.

Avg. Disk Queue Length is the average number of both read and write requests that were queued for the selected disk during the sample interval.

Disk Read Time is the percentage of elapsed time that the selected disk drive is busy servicing read requests.

Avg. Disk Read Queue Length is the average number of read requests that were queued for the selected disk during the sample interval.

Disk Write Time is the percentage of elapsed time that the selected disk drive is busy servicing write requests.

Avg. Disk Write Queue Length is the average number of write requests that were queued for the selected disk during the sample interval.

Avg. Disk sec/Transfer is the time in seconds of the average disk transfer.

Avg. Disk sec/Read is the average time in seconds of a read of data from the disk.

Avg. Disk sec/Write is the average time in seconds of a write of data to the disk.

Disk Transfers/sec is the rate of read and write operations on the disk.

Disk Reads/sec is the rate of read operations on the disk.

Disk Writes/sec is the rate of write operations on the disk.

Disk Bytes/sec is the rate bytes are transferred to or from the disk during write or read operations.

Disk Read Bytes/sec is the rate bytes are transferred from the disk during read operations.

Disk Write Bytes is rate bytes are transferred to the disk during write operations.

A table containing performance information for instances of 'logicalDisk' objects.

Performance information for one particular instance of 'logicalDisk' object.

Index.

Instance name.

Percent Free Space is the ratio of the free space available on the logical disk unit to the total usable space provided by the selected logical disk drive

Free Megabytes displays the unallocated space on the disk drive in megabytes. One megabyte = 1,048,576 bytes.

Current Disk Queue Length is the number of requests outstanding on the disk at the time the performance data is collected. It includes requests in service at the time of the snapshot. This is an instantaneous length, not an average over the time interval. Multi-spindle disk devices can have multiple requests active at one time, but other concurrent requests are awaiting service. This counter may reflect a transitory high or low queue length, but if there is a sustained load on the disk drive, it is likely that this will be consistently high. Requests are experiencing delays proportional to the length of this queue minus the number of spindles on the disks. This difference should average less than 2 for good performance.

Disk Time is the percentage of elapsed time that the selected disk drive is busy servicing read or write requests.

Avg. Disk Queue Length is the average number of both read and write requests that were queued for the selected disk during the sample interval.

Disk Read Time is the percentage of elapsed time that the selected disk drive is busy servicing read requests.

Avg. Disk Read Queue Length is the average number of read requests that were queued for the selected disk during the sample interval.

Disk Write Time is the percentage of elapsed time that the selected disk drive is busy servicing write requests.

Avg. Disk Write Queue Length is the average number of write requests that were queued for the selected disk during the sample interval.

Avg. Disk sec/Transfer is the time in seconds of the average disk transfer.

Avg. Disk sec/Read is the average time in seconds of a read of data from the disk.

Avg. Disk sec/Write is the average time in seconds of a write of data to the disk.

Disk Transfers/sec is the rate of read and write operations on the disk.

Disk Reads/sec is the rate of read operations on the disk.

Disk Writes/sec is the rate of write operations on the disk.

Disk Bytes/sec is the rate bytes are transferred to or from the disk during write or read operations.

Disk Read Bytes/sec is the rate bytes are transferred from the disk during read operations.

Disk Write Bytes is rate bytes are transferred to the disk during write operations.

A table containing performance information for instances of 'paging-File' objects.

Performance information for one particular instance of 'paging-File' object.

Index.

Instance name.

The amount of the Page File instance in use in percent. See also Process:Page File Bytes.

The peak usage of the Page File instance in percent. See also Process:Page File Bytes Peak.

A table containing performance information for instances of 'process' objects.

Performance information for one particular instance of 'process' object.

Index.

Instance name.

Processor Time is the percentage of elapsed time that all of the threads of this process used the processor to execute instructions. An instruction is the basic unit of execution in a computer, a thread is the object that executes instructions, and a process is the object created when a program is run. Code executed to handle certain hardware interrupts or trap conditions may be counted for this process.

User Time is the percentage of elapsed time that this process's threads have spent executing code in User Mode. Applications execute in User Mode, as do subsystems like the window manager and the graphics engine. Code executing in User Mode cannot damage the integrity of the Windows NT Executive, Kernel, and device drivers. Unlike some early operating systems, Windows NT uses process boundaries for subsystem protection in addition to the traditional protection of User and Privileged modes. These subsystem processes provide additional protection. Therefore, some work done by Windows NT on behalf of your application may appear in other subsystem processes in addition to the Privileged Time in your process.

Privileged Time is the percentage of elapsed time that this process's threads have spent executing code in Privileged Mode. When a Windows NT system service is called, the service will often run in Privileged Mode to gain access to system-private data. Such data is protected from access by threads executing in User Mode. Calls to the system may be explicit, or they may be implicit such as when a page fault or an interrupt occurs. Unlike some early operating systems, Windows NT uses process boundaries for subsystem protection in addition to the traditional protection of User and Privileged modes. These subsystem processes provide additional protection. Therefore, some work done by Windows NT on behalf of your application may appear in other subsystem processes in addition to the Privileged Time in your process.

Virtual Bytes Peak is the maximum number of bytes of virtual address space the process has used at any one time. Use of virtual address space does not necessarily imply corresponding use of either disk or main memory pages. Virtual space is however finite, and by using too much, the process may limit its ability to load libraries.

Virtual Bytes is the current size in bytes of the virtual address space the process is using. Use of virtual address space does not necessarily imply corresponding use of either disk or main memory pages. Virtual space is however finite, and by using too much, the process may limit its ability to load libraries.

Page Faults/sec is the rate of Page Faults by the threads executing in this process. A page fault occurs when a thread refers to a virtual memory page that is not in its working set in main memory. This will not cause the page to be fetched from disk if it is on the standby list and hence already in main memory, or if it is in use by another process with whom the page is shared.

Working Set Peak is the maximum number of bytes in the Working Set of this process at any point in time. The Working Set is the set of memory pages touched recently by the threads in the process. If free memory in the computer is above a threshold, pages are left in the Working Set of a process even if they are not in use. When free memory falls below a threshold, pages are trimmed from Working Sets. If they are needed they will then be soft-faulted back into the Working Set before they leave main memory.

Working Set is the current number of bytes in the Working Set of this process. The Working Set is the set of memory pages touched recently by the threads in the process. If free memory in the computer is above a threshold, pages are left in the Working Set of a process even if they are not in use. When free memory falls below a threshold, pages are trimmed from Working Sets. If they are needed they will then be soft-faulted back into the Working Set before they leave main memory.

Page File Bytes Peak is the maximum number of bytes this process has used in the paging file(s). Paging files are used to store pages of memory used by the process that are not contained in other files. Paging files are shared by all processes, and lack of space in paging files can prevent other processes from allocating memory.

Page File Bytes is the current number of bytes this process has used in the paging file(s). Paging files are used to store pages of memory used by the process that are not contained in other files. Paging files are shared by all processes, and lack of space in paging files can prevent other processes from allocating memory.

Private Bytes is the current number of bytes this process has allocated that cannot be shared with other processes.

The number of threads currently active in this process. An instruction is the basic unit of execution in a processor, and a thread is the object that executes instructions. Every running process has at least one thread.

The current base priority of this process. Threads within a process can raise and lower their own base priority relative to the process's base priority.

The total elapsed time (in seconds) this process has been running.

ID Process is the unique identifier of this process. ID Process numbers are reused, so they only identify a process for the lifetime of that process.

Pool Paged Bytes is the number of bytes in the Paged Pool, a system memory area where space is acquired by operating system components as they accomplish their appointed tasks. Paged Pool pages can be paged out to the paging file when not accessed by the system for sustained periods of time.

Pool Nonpaged Bytes is the number of bytes in the Nonpaged Pool, a system memory area where space is acquired by operating system components as they accomplish their appointed tasks. Nonpaged Pool pages cannot be paged out to the paging file, but instead remain in main memory as long as they are allocated.

The total number of handles currently open by this process. This number is the sum of the handles currently open by each thread in this process.

Bytes Total/sec is the rate the Redirector is processing data bytes. This includes all application and file data in addition to protocol information such as packet headers.

File Data Operations/sec is the rate the Redirector is processing data operations. One operation includes (hopefully) many bytes. We say hopefully here because each operation has overhead. You can determine the efficiency of this path by dividing the Bytes/sec by this counter to determine the average number of bytes transferred/operation.

Packets/sec is the rate the Redirector is processing data packets. One packet includes (hopefully) many bytes. We say hopefully here because each packet has protocol overhead. You can determine the efficiency of this path by dividing the Bytes/sec by this counter to determine the average number of bytes transferred/packet. You can also divide this counter by Operations/sec to determine the average number of packets per operation, another measure of efficiency.

Bytes Received/sec is the rate of bytes coming in to the Redirector from the network. It includes all application data as well as network protocol information (such as packet headers.)

Packets Received/sec is the rate that the Redirector is receiving packets (also called SMBs or Server Message Blocks). Network transmissions are divided into packets. The average number of bytes received in a packet can be obtained by dividing Bytes Received/sec by this counter. Some packets received may not contain incoming data, for example an acknowledgment to a write made by the Redirector would count as an incoming packet.

Read Bytes Paging/sec is the rate that the Redirector is attempting to read bytes in response to page faults. Page faults are caused by loading of modules (such as programs and libraries), by a miss in the Cache (see Read Bytes Cache/sec), or by files directly mapped into the address space of applications (a high-performance feature of Windows NT.)

Read Bytes Non-Paging/sec are those bytes read by the Redirector in response to normal file requests by an application when they are redirected to come from another computer. In addition to file requests, this counter includes other methods of reading across the network such as Named Pipes and Transactions. This counter does not count network protocol information, just application data.

Read Bytes Cache/sec is the rate that applications on your computer are accessing the Cache using the Redirector. Some of these data requests may be satisfied by merely retrieving the data from the system Cache on your own computer if it happened to be used recently and there was room to keep it in the Cache. Requests that miss the Cache will cause a page fault (see Read Bytes Paging/sec).

Read Bytes Network/sec is the rate that applications are reading data across the network. For one reason or another the data was not in the system Cache, and these bytes actually came across the network. Dividing this number by Bytes Received/sec will indicate the 'efficiency' of data coming in from the network, since all of these bytes are real application data (see Bytes Received/sec.)

Bytes Transmitted/sec is the rate that bytes are leaving the Redirector to the network. It includes all application data as well as network protocol information (such as packet headers and the like.)

Packets Transmitted/sec is the rate that the Redirector is sending packets (also called SMBs or Server Message Blocks). Network transmissions are divided into packets. The average number of bytes transmitted in a packet can be obtained by dividing Bytes Transmitted/sec by this counter.

Write Bytes Paging/sec is the rate that the Redirector is attempting to write bytes changed in the pages being used by applications. The program data changed by modules (such as programs and libraries) that were loaded over the network are 'paged out' when no longer needed. Other output pages come from the Cache (see Write Bytes Cache/sec).

Write Bytes Non-Paging/sec is the rate of the bytes that are written by the Redirector in response to normal file outputs by an application when they are redirected to go to another computer. In addition to file requests this counter includes other methods of writing across the network such as Named Pipes and Transactions. This counter does not count network protocol information, just application data.

Write Bytes Cache/sec is the rate that applications on your computer are writing to the Cache using the Redirector. The data may not leave your computer immediately, but may be retained in the Cache for further modification before being written to the network. This saves network traffic. Each write of a byte into the Cache is counted here.

Write Bytes Network/sec is the rate that your applications are writing data across the network. Either the system Cache was bypassed, as for Named Pipes or Transactions, or else the Cache wrote the bytes to make room for other data. Dividing this counter by Bytes Transmitted/sec will indicate the 'efficiency' of data written to the network, since all of these bytes are real application data (see Transmitted Bytes/sec.)

File Read Operations/sec is the rate that applications are asking the Redirector for data. Each call to a file system or similar Application Program Interface (API) call counts as one operation.

Read Operations Random/sec counts the rate that, on a file-by-file basis, reads are made that are not sequential. If a read is made using a particular file handle, and then is followed by another read that is not immediately the contiguous next byte, this counter is incremented by one.

Read Packets/sec is the rate that read packets are being placed on the network. Each time a single packet is sent with a request to read data remotely, this counter is incremented by one.

Reads Large/sec is the rate that reads over 2 times the server's negotiated buffer size are made by applications. Too many of these could place a strain on server resources. This counter is incremented once for each read. It does not count packets.

Read Packets Small/sec is the rate that reads less than one-fourth of the server's negotiated buffer size are made by applications. Too many of these could indicate a waste of buffers on the server. This counter is incremented once for each read. It does not count packets.

File Write Operations/sec is the rate that applications are sending data to the Redirector. Each call to a file system or similar Application Program Interface (API) call counts as one operation.

Write Operations Random/sec is the rate that, on a file-by-file basis, writes are made that are not sequential. If a write is made using a particular file handle, and then is followed by another write that is not immediately the next contiguous byte, this counter is incremented by one.

Write Packets/sec is the rate that writes are being sent to the network. Each time a single packet is sent with a request to write remote data, this counter is incremented by one.

Writes Large/sec is the rate that writes are made by applications that are over 2 times the server's negotiated buffer size. Too many of these could place a strain on server resources. This counter is incremented once for each write: it counts writes, not packets.

Write Packets Small/sec is the rate that writes are made by applications that are less than one-fourth of the server's negotiated buffer size. Too many of these could indicate a waste of buffers on the server. This counter is incremented once for each write: it counts writes, not packets!

Reads Denied/sec is the rate that the server is unable to accommodate requests for Raw Reads. When a read is much larger than the server's negotiated buffer size, the Redirector requests a Raw Read which, if granted, would permit the transfer of the data without lots of protocol overhead on each packet. To accomplish this the server must lock out other requests, so the request is denied if the server is really busy.

Writes Denied/sec is the rate that the server is unable to accommodate requests for Raw Writes. When a write is much larger than the server's negotiated buffer size, the Redirector requests a Raw Write which, if granted, would permit the transfer of the data without lots of protocol overhead on each packet. To accomplish this the server must lock out other requests, so the request is denied if the server is really busy.

Network Errors/sec counts serious unexpected errors that generally indicate the Redirector and one or more Servers are having serious communication difficulties. For example an SMB (Server Manager Block) protocol error will generate a Network Error. These result in an entry in the system Event Log, so look there for details.

Server Sessions counts the total number of security objects the Redirector has managed. For example, a Logon to a server followed by a network access to the same server will establish one connection, but two sessions.

Server Reconnects counts the number of times your Redirector has had to reconnect to a server in order to complete a new active request. You can be disconnected by the Server if you remain inactive for too long. Locally even if all your remote files are closed, the Redirector will keep your connections intact for (nominally) ten minutes. Such inactive connections are called Dormant Connections. Reconnecting is expensive in time.

Connects Core counts the number of connections you have to servers running the original MS-Net SMB protocol, including MS-Net itself and Xenix and Vax's.

Connects Lan Manager 2.0 counts connections to Lan Manager 2.0 servers, including LMX servers.

Connects Lan Manager 2.1 counts connections to Lan Manager 2.1 servers, including LMX servers.

Connects Windows NT counts the connections to Windows NT computers. Good choice!

Server Disconnects counts the number of times a Server has disconnected your Redirector. See also Server Reconnects.

Server Sessions Hung counts the number of active sessions that are timed out and unable to proceed due to a lack of response from the remote server.

Current Commands counts the number of requests to the Redirector that are currently queued for service. If this number is much larger than the number of network adapter cards installed in the computer, then the network(s) and/or the server(s) being accessed are seriously bottlenecked.

Segments/sec is the rate that TCP segments are sent or received using the TCP protocol.

Connections Established is the number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT.

Connections Active is the number of times TCP connections have made a direct transition to the SYN-SENT state from the CLOSED state.

Connections Passive is the number of times TCP connections have made a direct transition to the SYN-RCVD state from the LISTEN state.

Connection Failures is the number of times TCP connections have made a direct transition to the CLOSED state from the SYN-SENT state or the SYN-RCVD state, plus the number of times TCP connections have made a direct transition to the LISTEN state from the SYN-RCVD state.

Connections Reset is the number of times TCP connections have made a direct transition to the CLOSED state from either the ESTABLISHED state or the CLOSE-WAIT state.

Segments Received/sec is the rate that segments are received, including those received in error. This count includes segments received on currently established connections.

Segments Sent/sec is the rate that segments are sent, including those on current connections, but excluding those containing only retransmitted bytes.

Segments Retransmitted/sec is the rate that segments are retransmitted, that is, segments transmitted containing one or more previously transmitted bytes.

Datagrams/sec is the rate that IP datagrams are received from or sent to the interfaces, including those in error. Any forwarded datagrams are not included in this rate.

Datagrams Received/sec is the rate that IP datagrams are received from the interfaces, including those in error.

Datagrams Received Header Errors is the number of input datagrams discarded due to errors in their IP headers, including bad checksums, version number mismatch, other format errors, time-to-live exceeded, errors discovered in processing their IP options, etc.

Datagrams Received Address Errors is the number of input datagrams discarded because the IP address in their IP header's destination field was not a valid address to be received at this entity. This count includes invalid addresses (e.g., 0.0. 0.0) and addresses of unsupported Classes (e.g., Class E). For entities that are not IP Gateways and therefore do not forward datagrams, this counter includes datagrams discarded because the destination address was not a local address.

Datagrams Forwarded/sec is the rate of input datagrams for that this entity was not their final IP destination, as a result of which an attempt was made to find a route to forward them to that final destination. In entities that do not act as IP Gateways, this rate will include only those packets that were Source-Routed via this entity, and the Source-Route option processing was successful.

Datagrams Received Unknown Protocol is the number of locally-addressed datagrams received successfully but discarded because of an unknown or unsupported protocol.

Datagrams Received Discarded is the number of input IP datagrams for which no problems were encountered to prevent their continued processing, but which were discarded (e.g., for lack of buffer space). This counter does not include any datagrams discarded while awaiting re-assembly.

Datagrams Received Delivered/sec is the rate that input datagrams are successfully delivered to IP user-protocols (including ICMP).

Datagrams Sent/sec is the rate that IP datagrams are supplied to IP for transmission by local IP user-protocols (including ICMP). That this counter does not include any datagrams counted in Datagrams Forwarded.

Datagrams Outbound Discarded is the number of output IP datagrams for which no problems were encountered to prevent their transmission to their destination, but which were discarded (e.g., for lack of buffer space.) This counter would include datagrams counted in Datagrams Forwarded if any such packets met this (discretionary) discard criterion.

Datagrams Outbound No Route is the number of IP datagrams discarded because no route could be found to transmit them to their destination. This counter includes any packets counted in Datagrams Forwarded that meet this `no route' criterion.

Fragments Received/sec is the rate that IP fragments that need to be re-assembled at this entity are received.

Fragments Re-assembled/sec is the rate that IP fragments are successfully re-assembled.

Fragment Re-assembly Failures is the number of failures detected by the IP re-assembly algorithm (for whatever reason: timed out, errors, etc.) This is not necessarily a count of discarded IP fragments since some algorithms (notably RFC 815) can lose track of the number of fragments by combining them as they are received.

Fragmented Datagrams/sec is the rate that datagrams are successfully fragmented at this entity.

Fragmentation Failures is the number of IP datagrams that have been discarded because they needed to be fragmented at this entity but could not be, e.g., because their `Don't Fragment' flag was set.

Fragments Created/sec is the rate that IP datagram fragments have been generated as a result of fragmentation at this entity.

Datagrams/sec is the rate that UDP datagrams are sent or received by the entity.

Datagrams Received/sec is the rate that UDP datagrams are delivered to UDP users.

Datagrams No Port/sec is the rate of received UDP datagrams for which there was no application at the destination port.

Datagrams Received Errors is the number of received UDP datagrams that could not be delivered for reasons other than the lack of an application at the destination port.

Datagrams Sent/sec is the rate that UDP datagrams are sent from the entity.

A table containing performance information for instances of 'netBEUI' objects.

Performance information for one particular instance of 'netBEUI' object.

Index.

Instance name.

Datagrams/sec is the rate that datagrams are processed by the computer. This counter displays the sum of datagrams sent and datagrams received. A datagram is a connectionless packet whose delivery to a remote is not guaranteed.

Datagram Bytes/sec is the rate that datagram bytes are processed by the computer. This counter is the sum of datagram bytes that are sent as well as received. A datagram is a connectionless packet whose delivery to a remote is not guaranteed.

Packets/sec is the rate that packets are processed by the computer. This count is the sum of Packets Sent and Packets Received per second. This counter includes all packets processed: control as well as data packets.

Frames/sec is the rate that data frames (or packets) are processed by the computer. This counter is the sum of data frames sent and data frames received. This counter only counts those frames (packets) that carry data.

Frame Bytes/sec is the rate that data bytes are processed by the computer. This counter is the sum of data frame bytes sent and received. This counter only counts the byte in frames (packets) that carry data.

Bytes Total/sec is the sum of Frame Bytes/sec and Datagram Bytes/sec. This is the total rate of bytes sent to or received from the network by the protocol, but only counts the bytes in frames (i.e., packets) which carry data.

Connections Open is the number of connections currently open for this protocol. This counter shows the current count only and does not accumulate over time.

Connections No Retries is the total count of connections that were successfully made on the first try. This number is an accumulator and shows a running total.

Connections With Retries is the total count of connections that were made after retrying the attempt. A retry occurs when the first connection attempt failed. This number is an accumulator and shows a running total.

Disconnects Local is the number of session disconnections that were initiated by the local computer. This number is an accumulator and shows a running total.

Disconnects Remote is the number of session disconnections that were initiated by the remote computer. This number is an accumulator and shows a running total.

Failures Link is the number of connections that were dropped due to a link failure. This number is an accumulator and shows a running total.

Failures Adapter is the number of connections that were dropped due to an adapter failure. This number is an accumulator and shows a running total.

Connection Session Timeouts is the number of connections that were dropped due to a session timeout. This number is an accumulator and shows a running total.

Connections Canceled is the number of connections that were canceled. This number is an accumulator and shows a running total.

Failures Resource Remote is the number of connections that failed because of resource problems or shortages on the remote computer. This number is an accumulator and shows a running total.

Failures Resource Local is the number of connections that failed because of resource problems or shortages on the local computer. This number is an accumulator and shows a running total.

Failures Not Found is the number of connection attempts that failed because the remote computer could not be found. This number is an accumulator and shows a running total.

Failures No Listen is the number of connections that were rejected because the remote computer was not listening for connection requests.

Datagrams Sent/sec is the rate that datagrams are sent from the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Datagram Bytes Sent/sec is the rate that datagram bytes are sent from the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Datagrams Received/sec is the rate that datagrams are received by the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Datagram Bytes Received/sec is the rate that datagram bytes are received by the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Packets Sent/sec is the rate that packets are sent by the computer. This counter counts all packets sent by the computer, i.e. control as well as data packets.

Packets Received/sec is the rate that packets are received by the computer. This counter counts all packets processed: control as well as data packets.

Frames Sent/sec is the rate that data frames are sent by the computer. This counter only counts the frames (packets) that carry data.

Frame Bytes Sent/sec is the rate that data bytes are sent by the computer. This counter only counts the bytes in frames (packets) that carry data.

Frames Received/sec is the rate that data frames are received by the computer. This counter only counts the frames (packets) that carry data.

Frame Bytes Received/sec is the rate that data bytes are received by the computer. This counter only counts the frames (packets) that carry data.

Frames Re-Sent/sec is the rate that data frames (packets) are re-sent by the computer. This counter only counts the frames or packets that carry data.

Frame Bytes Re-Sent/sec is the rate that data bytes are re-sent by the computer. This counter only counts the bytes in frames that carry data.

Frames Rejected/sec is the rate that data frames are rejected. This counter only counts the frames (packets) that carry data.

Frame Bytes Rejected/sec is the rate that data bytes are rejected. This counter only counts the bytes in data frames (packets) that carry data.

Expirations Response is the count of T1 timer expirations.

Expirations Ack is the count of T2 timer expirations

Window Send Maximum is the maximum number of bytes of data that will be sent before waiting for an acknowledgment from the remote computer.

Window Send Average is the running average number of data bytes that were sent before waiting for an acknowledgment from the remote computer.

Piggyback Ack Queued/sec is the rate that piggybacked acknowledgments are queued. Piggyback acknowledgments are acknowledgments to received packets that are to be included in the next outgoing packet to the remote computer.

Piggyback Ack Timeouts is the number of times that a piggyback acknowledgment could not be sent because there was no outgoing packet to the remote on which to piggyback. A piggyback ack is an acknowledgment to a received packet that is sent along in an outgoing data packet to the remote computer. If no outgoing packet is sent within the timeout period, then an ack packet is sent and this counter is incremented.

A table containing performance information for instances of 'nBT-Connection' objects.

Performance information for one particular instance of 'nBT-Connection' object.

Index.

Instance name.

Bytes Received/sec is the rate that bytes are received by the local computer over an NBT connection to some remote computer. All the bytes received by the local computer over the particular NBT connection are counted.

Bytes Sent/sec is the rate that bytes are sent by the local computer over an NBT connection to some remote computer. All the bytes sent by the local computer over the particular NBT connection are counted.

Total Bytes/sec is the rate that bytes are sent or received by the local computer over an NBT connection to some remote computer. All the bytes sent or received by the local computer over the particular NBT connection are counted.

A table containing performance information for instances of 'nWLink-IPX' objects.

Performance information for one particular instance of 'nWLink-IPX' object.

Index.

Instance name.

Datagrams/sec is the rate that datagrams are processed by the computer. This counter displays the sum of datagrams sent and datagrams received. A datagram is a connectionless packet whose delivery to a remote is not guaranteed.

Datagram Bytes/sec is the rate that datagram bytes are processed by the computer. This counter is the sum of datagram bytes that are sent as well as received. A datagram is a connectionless packet whose delivery to a remote is not guaranteed.

Packets/sec is the rate that packets are processed by the computer. This count is the sum of Packets Sent and Packets Received per second. This counter includes all packets processed: control as well as data packets.

Frames/sec is the rate that data frames (or packets) are processed by the computer. This counter is the sum of data frames sent and data frames received. This counter only counts those frames (packets) that carry data.

Frame Bytes/sec is the rate that data bytes are processed by the computer. This counter is the sum of data frame bytes sent and received. This counter only counts the byte in frames (packets) that carry data.

Bytes Total/sec is the sum of Frame Bytes/sec and Datagram Bytes/sec. This is the total rate of bytes sent to or received from the network by the protocol, but only counts the bytes in frames (i.e., packets) which carry data.

Connections Open is the number of connections currently open for this protocol. This counter shows the current count only and does not accumulate over time.

Connections No Retries is the total count of connections that were successfully made on the first try. This number is an accumulator and shows a running total.

Connections With Retries is the total count of connections that were made after retrying the attempt. A retry occurs when the first connection attempt failed. This number is an accumulator and shows a running total.

Disconnects Local is the number of session disconnections that were initiated by the local computer. This number is an accumulator and shows a running total.

Disconnects Remote is the number of session disconnections that were initiated by the remote computer. This number is an accumulator and shows a running total.

Failures Link is the number of connections that were dropped due to a link failure. This number is an accumulator and shows a running total.

Failures Adapter is the number of connections that were dropped due to an adapter failure. This number is an accumulator and shows a running total.

Connection Session Timeouts is the number of connections that were dropped due to a session timeout. This number is an accumulator and shows a running total.

Connections Canceled is the number of connections that were canceled. This number is an accumulator and shows a running total.

Failures Resource Remote is the number of connections that failed because of resource problems or shortages on the remote computer. This number is an accumulator and shows a running total.

Failures Resource Local is the number of connections that failed because of resource problems or shortages on the local computer. This number is an accumulator and shows a running total.

Failures Not Found is the number of connection attempts that failed because the remote computer could not be found. This number is an accumulator and shows a running total.

Failures No Listen is the number of connections that were rejected because the remote computer was not listening for connection requests.

Datagrams Sent/sec is the rate that datagrams are sent from the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Datagram Bytes Sent/sec is the rate that datagram bytes are sent from the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Datagrams Received/sec is the rate that datagrams are received by the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Datagram Bytes Received/sec is the rate that datagram bytes are received by the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Packets Sent/sec is the rate that packets are sent by the computer. This counter counts all packets sent by the computer, i.e. control as well as data packets.

Packets Received/sec is the rate that packets are received by the computer. This counter counts all packets processed: control as well as data packets.

Frames Sent/sec is the rate that data frames are sent by the computer. This counter only counts the frames (packets) that carry data.

Frame Bytes Sent/sec is the rate that data bytes are sent by the computer. This counter only counts the bytes in frames (packets) that carry data.

Frames Received/sec is the rate that data frames are received by the computer. This counter only counts the frames (packets) that carry data.

Frame Bytes Received/sec is the rate that data bytes are received by the computer. This counter only counts the frames (packets) that carry data.

Frames Re-Sent/sec is the rate that data frames (packets) are re-sent by the computer. This counter only counts the frames or packets that carry data.

Frame Bytes Re-Sent/sec is the rate that data bytes are re-sent by the computer. This counter only counts the bytes in frames that carry data.

Frames Rejected/sec is the rate that data frames are rejected. This counter only counts the frames (packets) that carry data.

Frame Bytes Rejected/sec is the rate that data bytes are rejected. This counter only counts the bytes in data frames (packets) that carry data.

Expirations Response is the count of T1 timer expirations.

Expirations Ack is the count of T2 timer expirations

Window Send Maximum is the maximum number of bytes of data that will be sent before waiting for an acknowledgment from the remote computer.

Window Send Average is the running average number of data bytes that were sent before waiting for an acknowledgment from the remote computer.

Piggyback Ack Queued/sec is the rate that piggybacked acknowledgments are queued. Piggyback acknowledgments are acknowledgments to received packets that are to be included in the next outgoing packet to the remote computer.

Piggyback Ack Timeouts is the number of times that a piggyback acknowledgment could not be sent because there was no outgoing packet to the remote on which to piggyback. A piggyback ack is an acknowledgment to a received packet that is sent along in an outgoing data packet to the remote computer. If no outgoing packet is sent within the timeout period, then an ack packet is sent and this counter is incremented.

A table containing performance information for instances of 'nWLink-SPX' objects.

Performance information for one particular instance of 'nWLink-SPX' object.

Index.

Instance name.

Datagrams/sec is the rate that datagrams are processed by the computer. This counter displays the sum of datagrams sent and datagrams received. A datagram is a connectionless packet whose delivery to a remote is not guaranteed.

Datagram Bytes/sec is the rate that datagram bytes are processed by the computer. This counter is the sum of datagram bytes that are sent as well as received. A datagram is a connectionless packet whose delivery to a remote is not guaranteed.

Packets/sec is the rate that packets are processed by the computer. This count is the sum of Packets Sent and Packets Received per second. This counter includes all packets processed: control as well as data packets.

Frames/sec is the rate that data frames (or packets) are processed by the computer. This counter is the sum of data frames sent and data frames received. This counter only counts those frames (packets) that carry data.

Frame Bytes/sec is the rate that data bytes are processed by the computer. This counter is the sum of data frame bytes sent and received. This counter only counts the byte in frames (packets) that carry data.

Bytes Total/sec is the sum of Frame Bytes/sec and Datagram Bytes/sec. This is the total rate of bytes sent to or received from the network by the protocol, but only counts the bytes in frames (i.e., packets) which carry data.

Connections Open is the number of connections currently open for this protocol. This counter shows the current count only and does not accumulate over time.

Connections No Retries is the total count of connections that were successfully made on the first try. This number is an accumulator and shows a running total.

Connections With Retries is the total count of connections that were made after retrying the attempt. A retry occurs when the first connection attempt failed. This number is an accumulator and shows a running total.

Disconnects Local is the number of session disconnections that were initiated by the local computer. This number is an accumulator and shows a running total.

Disconnects Remote is the number of session disconnections that were initiated by the remote computer. This number is an accumulator and shows a running total.

Failures Link is the number of connections that were dropped due to a link failure. This number is an accumulator and shows a running total.

Failures Adapter is the number of connections that were dropped due to an adapter failure. This number is an accumulator and shows a running total.

Connection Session Timeouts is the number of connections that were dropped due to a session timeout. This number is an accumulator and shows a running total.

Connections Canceled is the number of connections that were canceled. This number is an accumulator and shows a running total.

Failures Resource Remote is the number of connections that failed because of resource problems or shortages on the remote computer. This number is an accumulator and shows a running total.

Failures Resource Local is the number of connections that failed because of resource problems or shortages on the local computer. This number is an accumulator and shows a running total.

Failures Not Found is the number of connection attempts that failed because the remote computer could not be found. This number is an accumulator and shows a running total.

Failures No Listen is the number of connections that were rejected because the remote computer was not listening for connection requests.

Datagrams Sent/sec is the rate that datagrams are sent from the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Datagram Bytes Sent/sec is the rate that datagram bytes are sent from the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Datagrams Received/sec is the rate that datagrams are received by the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Datagram Bytes Received/sec is the rate that datagram bytes are received by the computer. A datagram is a connectionless packet whose delivery to a remote computer is not guaranteed.

Packets Sent/sec is the rate that packets are sent by the computer. This counter counts all packets sent by the computer, i.e. control as well as data packets.

Packets Received/sec is the rate that packets are received by the computer. This counter counts all packets processed: control as well as data packets.

Frames Sent/sec is the rate that data frames are sent by the computer. This counter only counts the frames (packets) that carry data.

Frame Bytes Sent/sec is the rate that data bytes are sent by the computer. This counter only counts the bytes in frames (packets) that carry data.

Frames Received/sec is the rate that data frames are received by the computer. This counter only counts the frames (packets) that carry data.

Frame Bytes Received/sec is the rate that data bytes are received by the computer. This counter only counts the frames (packets) that carry data.

Frames Re-Sent/sec is the rate that data frames (packets) are re-sent by the computer. This counter only counts the frames or packets that carry data.

Frame Bytes Re-Sent/sec is the rate that data bytes are re-sent by the computer. This counter only counts the bytes in frames that carry data.

Frames Rejected/sec is the rate that data frames are rejected. This counter only counts the frames (packets) that carry data.

Frame Bytes Rejected/sec is the rate that data bytes are rejected. This counter only counts the bytes in data frames (packets) that carry data.

Expirations Response is the count of T1 timer expirations.

Expirations Ack is the count of T2 timer expirations

Window Send Maximum is the maximum number of bytes of data that will be sent before waiting for an acknowledgment from the remote computer.

Window Send Average is the running average number of data bytes that were sent before waiting for an acknowledgment from the remote computer.

Piggyback Ack Queued/sec is the rate that piggybacked acknowledgments are queued. Piggyback acknowledgments are acknowledgments to received packets that are to be included in the next outgoing packet to the remote computer.

Piggyback Ack Timeouts is the number of times that a piggyback acknowledgment could not be sent because there was no outgoing packet to the remote on which to piggyback. A piggyback ack is an acknowledgment to a received packet that is sent along in an outgoing data packet to the remote computer. If no outgoing packet is sent within the timeout period, then an ack packet is sent and this counter is incremented.

The number of bytes transmitted total for this connection.

The number of bytes received total for this connection.

The number of data frames transmitted total for this connection.

The number of data frames received total for this connection.

The compression ratio for bytes being transmitted.

The compression ratio for bytes being received.

The total number of CRC Errors for this connection. CRC Errors occur when the frame received contains erroneous data.

The total number of Timeout Errors for this connection. Timeout Errors occur when an expected is not received in time.

The total number of Serial Overrun Errors for this connection. Serial Overrun Errors occur when the hardware cannot handle the rate at which data is received.

The total number of Alignment Errors for this connection. Alignment Errors occur when a byte received is different from the byte expected.

The total number of Buffer Overrun Errors for this connection. Buffer Overrun Errors when the software cannot handle the rate at which data is received.

The total number of CRC, Timeout, Serial Overrun, Alignment, and Buffer Overrun Errors for this connection.

The number of bytes transmitted per second.

The number of bytes received per second.

The number of frames transmitted per second.

The number of frames received per second.

The total number of CRC, Timeout, Serial Overrun, Alignment, and Buffer Overrun Errors per second.

The total number of Remote Access connections.

The number of bytes the server has sent to and received from the network. This value provides an overall indication of how busy the server is.

The number of bytes the server has received from the network. Indicates how busy the server is.

The number of bytes the server has sent on the network. Indicates how busy the server is.

The number of sessions that have been closed due to their idle time exceeding the autodisconnect parameter for the server. Shows whether the autodisconnect setting is helping to conserve resources.

The number of sessions that have been closed due to unexpected error conditions. Indicates how frequently network problems are causing dropped sessions on the server.

The number of sessions that have terminated normally. Useful in interpreting the Sessions Times Out and Sessions Errored Out statistics--allows percentage calculations.

The number of sessions that have been forced to logoff. Can indicate how many sessions were forced to logoff due to logon time constraints.

The number of failed logon attempts to the server. Can indicate whether password guessing programs are being used to crack the security on the server.

The number of times opens on behalf of clients have failed with STATUS_ACCESS_DENIED. Can indicate whether somebody is randomly attempting to access files in hopes of getting at something that was not properly protected.

The number of times accesses to files opened successfully were denied. Can indicate attempts to access files without proper access authorization.

The number of times an internal Server Error was detected. Unexpected errors usually indicate a problem with the Server.

The number of times the server has rejected blocking SMBs due to insufficient count of free work items. Indicates whether the maxworkitem or minfreeworkitems server parameters may need tuning.

The number of times STATUS_DATA_NOT_ACCEPTED was returned at receive indication time. This occurs when no work item is available or can be allocated to service the incoming request. Indicates whether the initworkitems or maxworkitems parameters may need tuning.

The number of successful open attempts performed by the server of behalf of clients. Useful in determining the amount of file I/O, determining overhead for path-based operations, determining the effectiveness of oplocks.

The number of files currently opened in the server. Indicates current server activity.

The number of sessions currently active in the server. Indicates current server activity.

The number of searches for files currently active in the server. Indicates current server activity.

The number of bytes of non-pageable computer memory the server is currently using. Can help in determining good values for the maxnonpagedmemoryusage parameter.

The number of times allocations from nonpaged pool have failed. Indicates that the computer's physical memory is too small.

The maximum number of bytes of nonpaged pool the server has had in use at any one point. Indicates how much physical memory the computer should have.

The number of bytes of pageable computer memory the server is currently using. Can help in determining good values for the maxpagedmemoryusage parameter.

The number of times allocations from paged pool have failed. Indicates that the computer's physical memory of pagefile are too small.

The maximum number of bytes of paged pool the server has had allocated. Indicates the proper sizes of the Page File(s) and physical memory.

Context Blocks Queued per second is the rate that work context blocks had to be placed on the server's FSP queue to await server action.

Logon/sec is the rate of all server logons

Logon Total includes all interactive logons, network logons, service logons, successful logon, and failed logons since the machine is last rebooted.

A table containing performance information for instances of 'server-Work-Queues' objects.

Performance information for one particular instance of 'server-Work-Queues' object.

Index.

Instance name.

Queue Length is the current length of the server work queue for this CPU. A sustained queue length greater than four may indicate processor congestion. This is an instantaneous count, not an average over time.

Active Threads is the number of threads currently working on a request from the server client for this CPU. The system keeps this number as low as possible to minimize unnecessary context switching. This is an instantaneous count for the CPU, not an average over time.

Available Threads is the number of server threads on this CPU not currently working on requests from a client. The server dynamically adjusts the number of threads to maximize server performance.

Every request from a client is represented in the server as a 'work item,' and the server maintains a pool of available work items per CPU to speed processing. This is the instantaneous number of available work items for this CPU. A sustained near-zero value indicates the need to increase the MinFreeWorkItems registry value for the Server service. This value will always be 0 in the Blocking Queue instance.

Every request from a client is represented in the server as a 'work item,' and the server maintains a pool of available work items per CPU to speed processing. When a CPU runs out of work items, it borrows a free work item from another CPU. An increasing value of this running counter may indicate the need to increase the 'MaxWorkItems' or 'MinFreeWorkItems' registry values for the Server service. This value will always be 0 in the Blocking Queue instance.

Every request from a client is represented in the server as a 'work item,' and the server maintains a pool of available work items per CPU to speed processing. A sustained value greater than zero indicates the need to increase the 'MaxWorkItems' registry value for the Server service. This value will always be 0 in the Blocking Queue instance.

Current Clients is the instantaneous count of the clients being serviced by this CPU. The server actively balances the client load across all of the CPU's in the system. This value will always be 0 in the Blocking Queue instance.

The rate at which the Server is receiving bytes from the network clients on this CPU. This value is a measure of how busy the Server is.

The rate at which the Server is sending bytes to the network clients on this CPU. This value is a measure of how busy the Server is.

The rate at which the Server is sending and receiving bytes with the network clients on this CPU. This value is a measure of how busy the Server is.

Read Operations/sec is the rate the server is performing file read operations for the clients on this CPU. This value is a measure of how busy the Server is. This value will always be 0 in the Blocking Queue instance.

Read Bytes/sec is the rate the server is reading data from files for the clients on this CPU. This value is a measure of how busy the Server is.

Write Operations/sec is the rate the server is performing file write operations for the clients on this CPU. This value is a measure of how busy the Server is. This value will always be 0 in the Blocking Queue instance.

Write Bytes/sec is the rate the server is writing data to files for the clients on this CPU. This value is a measure of how busy the Server is.

Total Bytes/sec is the rate the Server is reading and writing data to and from the files for the clients on this CPU. This value is a measure of how busy the Server is.

Total Operations/sec is the rate the Server is performing file read and file write operations for the cliens on this CPU. This value is a measure of how busy the Server is. This value will always be 0 in the Blocking Queue instance.

Context Blocks Queued per second is the rate that work context blocks had to be placed on the server's FSP queue to await server action.

Data Maps/sec is the frequency that a file system such as NTFS or HPFS maps a page of a file into the Cache to read the page.

Sync Data Maps/sec counts the frequency that a file system such as NTFS or HPFS maps a page of a file into the Cache to read the page, and wishes to wait for the Cache to retrieve the page if it is not in main memory.

Async Data Maps/sec is the frequency that an application using a file system such as NTFS or HPFS to map a page of a file into the Cache to read the page, and does not wish to wait for the Cache to retrieve the page if it is not in main memory.

Data Map Hits is the percentage of Data Maps in the Cache that could be resolved without having to retrieve a page from the disk, i.e. the page was already in physical memory.

Data Map Pins/sec is the frequency of Data Maps in the Cache that resulted in pinning a page in main memory, an action usually preparatory to writing to the file on disk. While pinned, a page's physical address in main memory and virtual address in the Cache will not be altered.

Pin Reads/sec is the frequency of reading data into the Cache preparatory to writing the data back to disk. Pages read in this fashion are pinned in memory at the completion of the read. While pinned, a page's physical address in the Cache will not be altered.

Sync Pin Reads/sec is the frequency of reading data into the Cache preparatory to writing the data back to disk. Pages read in this fashion are pinned in memory at the completion of the read. The file system will not regain control until the page is pinned in the Cache, in particular if the disk must be accessed to retrieve the page. While pinned, a page's physical address in the Cache will not be altered.

Async Pin Reads/sec is the frequency of reading data into the Cache preparatory to writing the data back to disk. Pages read in this fashion are pinned in memory at the completion of the read. The file system will regain control immediately even if the disk must be accessed to retrieve the page. While pinned, a page's physical address will not be altered.

Pin Read Hits is the percentage of Cache Pin Read requests that hit the Cache, i.e., did not require a disk read in order to provide access to the page in the Cache. While pinned, a page's physical address in the Cache will not be altered. The LAN Redirector uses this method for retrieving Cache information, as does the LAN Server for small transfers. This is usually the method used by the disk file systems as well.

Copy Reads/sec is the frequency of reads from Cache pages that involve a memory copy of the data from the Cache to the application's buffer. The LAN Redirector uses this method for retrieving Cache information, as does the LAN Server for small transfers. This is a method used by the disk file systems as well.

Sync Copy Reads/sec is the frequency of reads from Cache pages that involve a memory copy of the data from the Cache to the application's buffer. The file system will not regain control until the copy operation is complete, even if the disk must be accessed to retrieve the page.

Async Copy Reads/sec is the frequency of reads from Cache pages that involve a memory copy of the data from the Cache to the application's buffer. The application will regain control immediately even if the disk must be accessed to retrieve the page.

Copy Read Hits is the percentage of Cache Copy Read requests that hit the Cache, i.e., did not require a disk read in order to provide access to the page in the Cache. A Copy Read is a file read operation that is satisfied by a memory copy from a Cache page to the application's buffer. The LAN Redirector uses this method for retrieving Cache information, as does the LAN Server for small transfers. This is a method used by the disk file systems as well.

MDL Reads/sec is the frequency of reads from Cache pages that use a Memory Descriptor List (MDL) to access the data. The MDL contains the physical address of each page involved in the transfer, and thus can employ a hardware Direct Memory Access (DMA) device to effect the copy. The LAN Server uses this method for large transfers out of the server.

Sync MDL Reads/sec is the frequency of reads from Cache pages that use a Memory Descriptor List (MDL) to access the pages. The MDL contains the physical address of each page in the transfer, thus permitting Direct Memory Access (DMA) of the pages. If the accessed page(s) are not in main memory, the caller will wait for the pages to fault in from the disk.

Async MDL Reads/sec is the frequency of reads from Cache pages using a Memory Descriptor List (MDL) to access the pages. The MDL contains the physical address of each page in the transfer, thus permitting Direct Memory Access (DMA) of the pages. If the accessed page(s) are not in main memory, the calling application program will not wait for the pages to fault in from disk.

MDL Read Hits is the percentage of Cache Memory Descriptor List (MDL) Read requests that hit the Cache, i.e., did not require disk accesses in order to provide memory access to the page(s) in the Cache.

Read Aheads/sec is the frequency of Cache reads where the Cache detects sequential access to a file. The read aheads permit the data to be transferred in larger blocks than those being requested by the application, reducing the overhead per access.

Fast Reads/sec is the frequency of reads from Cache pages that bypass the installed file system and retrieve the data directly from the Cache. Normally, file I/O requests invoke the appropriate file system to retrieve data from a file, but this path permits direct retrieval of Cache data without file system involvement if the data is in the Cache. Even if the data is not in the Cache, one invocation of the file system is avoided.

Sync Fast Reads/sec is the frequency of reads from Cache pages that bypass the installed file system and retrieve the data directly from the Cache. Normally, file I/O requests invoke the appropriate file system to retrieve data from a file, but this path permits direct retrieval of Cache data without file system involvement if the data is in the Cache. Even if the data is not in the Cache, one invocation of the file system is avoided. If the data is not in the Cache, the request (application program call) will wait until the data has been retrieved from disk.

Async Fast Reads/sec is the frequency of reads from Cache pages that bypass the installed file system and retrieve the data directly from the Cache. Normally, file I/O requests will invoke the appropriate file system to retrieve data from a file, but this path permits direct retrieval of Cache data without file system involvement if the data is in the Cache. Even if the data is not in the Cache, one invocation of the file system is avoided. If the data is not in the Cache, the request (application program call) will not wait until the data has been retrieved from disk, but will get control immediately.

Fast Read Resource Misses/sec is the frequency of Cache misses necessitated by the lack of available resources to satisfy the request.

Fast Read Not Possibles/sec is the frequency of attempts by an Application Program Interface (API) function call to bypass the file system to get at Cache data, that could not be honored without invoking the file system after all.

Lazy Write Flushes/sec is the frequency the Cache's Lazy Write thread has written to disk. Lazy Writing is the process of updating the disk after the page has been changed in memory, so the application making the change to the file does not have to wait for the disk write to complete before proceeding. More than one page can be transferred on each write operation.

Lazy Write Pages/sec is the frequency the Cache's Lazy Write thread has written to disk. Lazy Writing is the process of updating the disk after the page has been changed in memory, so the application making the change to the file does not have to wait for the disk write to complete before proceeding. More than one page can be transferred on a single disk write operation.

Data Flushes/sec is the frequency the Cache has flushed its contents to disk as the result of a request to flush or to satisfy a write-through file write request. More than one page can be transferred on each flush operation.

Data Flush Pages/sec is the number of pages the Cache has flushed to disk as a result of a request to flush or to satisfy a write-through file write request. More than one page can be transferred on each flush operation.

Adjacent MTA Associations is the number of open associations this MTA has to other MTAs.

Messages/sec is the rate that messages are processed.

Message Bytes/sec is the rate that message bytes are processed.

Free Elements is the number of free buffer elements in the MTA pool.

Free Headers is the number of free buffer headers in the MTA pool.

Admin Connections is the number of Microsoft Exchange Administrator programs connected to this MTA.

Threads in Use is the number of threads in use by the MTA (does not include RPC threads). This number can be used to determine whether additional processors could be of benefit.

Work Queue Length is the number of outstanding messages in the Work Queue, which indicates the number of messages not yet processed to completion by the MTA.

XAPI Gateways is the number of gateways connected to the MTA using the XAPI MT/OM interface. A single gateway may have multiple XAPI gateway sessions.

XAPI Clients is the number of XAPI clients connected to the MTA using the XAPI MA/OM interface. A single client may have multiple XAPI client sessions.

Disk File Deletes/sec is the rate of disk file delete operations.

Disk File Syncs/sec is the rate of disk file sync operations.

Disk File Opens/sec is the rate of disk file open operations.

Disk File Reads/sec is the rate of disk file read operations.

Disk File Writes/sec is the rate of disk file write operations.

ExDS Read Calls/sec is the rate of read calls to the directory service.

XAPI Receive Bytes/sec is the rate that bytes are received over a XAPI connection.

XAPI Transmit Bytes/sec is the rate that bytes are transmitted over a XAPI connection.

Admin Interface Receive Bytes/sec is the rate that bytes are received over an Admin connection.

Admin Interface Transmit Bytes/sec is the rate that bytes are transmitted over an Admin connection.

LAN Receive Bytes/sec is the rate that bytes are received over a LAN from MTAs.

LAN Transmit Bytes/sec is the rate that bytes are transmitted over a LAN to MTAs.

RAS Receive Bytes/sec is the rate that bytes are received over a RAS connection.

RAS Transmit Bytes/sec is the rate that bytes are transmitted over a RAS connection.

TCP/IP Receive Bytes/sec is the rate that bytes are received over a TCP/IP connection.

TCP/IP Transmit Bytes/sec is the rate that bytes are transmitted over a TCP/IP connection.

TP4 Receive Bytes/sec is the rate that bytes are received over a TP4 connection.

TP4 Transmit Bytes/sec is the rate that bytes are transmitted over a TP4 connection.

X.25 Receive Bytes/sec is the rate that bytes are received over an X.25 connection.

X.25 Transmit Bytes/sec is the rate that bytes are transmitted over an X.25 connection.

Deferred Delivery Msgs is the total number of deferred delivery messages currently stored in the MTA.

Total Recipients Queued is the total number of recipients specified in all messages currently stored in the MTA.

Total Successful Conversions is the total number of messages successfully converted from one form to another since MTA initialization.

Total Failed Conversions is the total number of messages which failed to be converted from one form to another since MTA initialization.

Total Loops Detected is the total number of messages detected to have looped since MTA initialization.

Inbound Messages Total is the total number of messages received since MTA initialization.

Outbound Messages Total is the total number of messages transmitted since MTA initialization.

Inbound Bytes Total is the total volume of message content received since MTA initialization, measured in kilobytes.

Work Queue Bytes is the total volume of message content currently stored in the MTA, measured in kilobytes.

Outbound Bytes Total is the total volume of message content transmitted since MTA initialization, measured in kilobytes.

Total Recipients Inbound is the total number of recipients specified in all messages received since MTA initialization.

Total Recipients Outbound is the total number of recipients specified in all messages transmitted since MTA initialization.

A table containing performance information for instances of 'mSExchangeMTA-Connections' objects.

Performance information for one particular instance of 'mSExchangeMTA-Connections' object.

Index.

Instance name.

Associations is the number of associations between the MTA and the connected entity. MTAs may open multiple associations if additional transfer throughput is necessary.

Receive Bytes/sec is the rate that bytes are received from the connected entity.

Send Bytes/sec is the rate that bytes are sent to the connected entity.

Receive Messages/sec is the rate that messages are received from the connected entity.

Send Messages/sec is the rate that messages are sent to the connected entity.

Queue Length is the number of outstanding messages queued for transfer to the entity.

Connector Index is a unique index associated with a connector entity.

Inbound Rejected Total is the total number of messages rejected from this entity since MTA initialization.

Total Recipients Queued is the total number of recipients specified in all messages currently stored in this entity's queue.

Oldest Message Queued is the time (secs) since the oldest message in this entity's queue was placed in the queue.

Current Inbound Associations is the current number of inbound (remote initiated) associations with the entity.

Current Outbound Associations is the current number of outbound (locally initiated) associations with the entity.

Cumulative Inbound Associations is the total number of inbound (remote initiated) associations with the entity, since MTA initialization.

Cumulative Outbound Associations is the total number of outbound (locally initiated) associations with the entity, since MTA initialization.

Last Inbound Association is the time (secs) since the last time an inbound (remote initiated) association for this entity was active.

Last Outbound Association is the time (secs) since the last time an outbound (locally initiated) association for this entity was active.

Rejected Inbound Associations is the total number of inbound (remote initiated) associations that have been rejected, since MTA initialization.

Failed Outbound Associations is the total number of outbound (locally initiated) associations that have failed, since MTA initialization.

Next Association Retry is the time (secs since 00:00 1st Jan 1970) when this entity is next scheduled to attempt to open an association.

Inbound Reject Reason is the reject reason code, if any, for the last association rejected from this entity.

Outbound Failure Reason is the failure reason code, if any, for the last association attempt to this entity.

Inbound Messages Total is the total number of messages received from this entity since MTA initialization.

Outbound Messages Total is the total number of messages transmitted to this entity since MTA initialization.

Inbound Bytes Total is the total volume of message content received from this entity since MTA initialization, measured in kilobytes.

Queued Bytes is the total volume of message content currently stored in this entity's queue, measured in kilobytes.

Outbound Bytes Total is the total volume of message content transmitted to this entity since MTA initialization, measured in kilobytes.

Total Recipients Inbound is the total number of recipients specified in all messages received from this entity since MTA initialization.

Total Recipients Outbound is the total number of recipients specified in all messages transmitted to this entity since MTA initialization.

The number of messages awaiting final delivery in MS Exchange Server

The size, in bytes, of the messages that have been converted from Internet Mail and are awaiting final delivery within MS Exchange Server

The number of messages entering the MTS-IN folder after conversion from Internet Mail format per hour

The number of messages waiting to be converted to Internet Mail format

The size, in bytes, of the messages waiting to be converted to Internet Mail format

Messages that have entered the Internet Mail Service

The number of messages entering the Outbound Queue per hour

The number of current SMTP connections to the Internet Mail Service established by other SMTP hosts

The number of current SMTP connections the Internet Mail Service has established to other SMTP hosts

The total number of successful SMTP connections that the Internet Mail Service has established since it was started

The total number of SMTP connections the Internet Mail Service has accepted from other hosts since it was started

The total number of SMTP connections that the Internet Mail Service has rejected from other hosts since it was started

The total number of SMTP connections the Internet Mail Service has attempted to other hosts that failed since it was started

The number of messages from MS Exchange Server, that are queued to be delivered to the Internet

The number of messages received from the Internet destined for MS Exchange Server

The total number of Non-delivery reports generated for inbound mail

The total number of Non-delivery reports generated for outbound mail

The total kilobytes of message data transferred into the MS Exchange Server

The total kilobytes of message data transferred out of the MS Exchange Server

The total number of Internet messages delivered into MS Exchange Server

The total number of outbound messages delivered to their destinations

The hourly rate of bytes transferred to the MS Exchange Server

The hourly rate of bytes transferred to the Internet

The hourly rate messages are transferred to the MS Exchange server

The hourly rate messages are transferred to the Internet

The hourly rate at which outbound connections were made

The hourly rate at which inbound connections were received

Total messages waiting in the Internet Mail Service queues

Total kilobytes of message data queued in the Internet Mail Service queues

Total number of recipients processed inbound since the Internet Mail Service was started

Total number of recipients processed outbound since the Internet Mail Service was started

Total number of recipients in the Internet Mail Service queues

Total message format conversions between internet format and Exchange format that succeeded.

Total message format conversions between internet format and Exchange format that failed.

Total number of messages NDRd because they appeared to be looping infinitely.

RPC Packets/sec is the rate that RPC packets are processed.

RPC Operations/sec is the rate that RPC operations occur.

Read Bytes RPC Clients/sec is the rate that bytes are read from RPC clients.

Write Bytes RPC Clients/sec is the rate that bytes are written to RPC clients.

Push Notifications Generated/sec is the rate at which notifications are being sent to clients that have registered for notifications of changes to tables in the information store.

Push Notifications Skipped/sec is the number of push notifications that have been skipped by caching at the server.

RPC Requests is the number of client requests that are currently being processed by the information store.

RPC Requests Peak is the maximum number of client requests that were processed simultaneously by the information store since it was started.

User Count is the number of users connected to the information store.

Number of user connections that have shown some activity in the last 10 minutes.

Maximum Users is the maximum number of concurrent users since startup.

Anonymous User Count is the number of anonymous users connected to the information store.

Number of active users.

The maximum number of anonymous users since startup.

Connection Count is the number of client processes connected to the information store.

Number of connections that have shown some activity in the last 10 minutes.

The maximum number of concurrent connections since startup.

The current size of the Push Notifications Cache.

The maximum size of the Push Notifications Cache.

Database Session Hit Rate is the percent hit rate on re-using database sessions.

Messages Sent to clients connected via the IMAP external network interface.

Total number of commands issued by clients connected via the IMAP external network interface

Rate at which messages are sent to clients connected via the IMAP external network interface.

Rate at which commands are issued by clients connected via the IMAP external network interface

Messages Sent to clients connected via the POP3 external network interface.

Total number of commands issued by clients connected via the POP3 external network interface

Rate at which messages are sent to clients connected via the POP3 external network interface.

Rate at which commands are issued by clients connected via the POP3 external network interface

NNTP Messages Read is the the total number of messages sent from the information store to NNTP clients since service startup.

NNTP Messages Posted is the total number of messages posted by NNTP clients into the information store since service startup.

NNTP Failed Posts is the total number of messages posted by NNTP clients that were rejected due to missing required headers or other errors.

Newsfeed Messages Received is the total number of messages received into the information store from NNTP newsfeeds since service startup.

Newsfeed Inbound Rejected Messages is the total number of messages received in newsfeeds from other NNTP servers that have been rejected as duplicates or due to errors.

Total number of commands issued by clients connected via the NNTP external network interface

Rate at which messages are sent to NNTP clients

Rate at which NNTP messages are posted by NNTP clients

Rate at which messages posted by NNTP clients are rejected

Rate at which messages are received into the information store from NNTP newsfeeds

Rate at which messages received in newsfeeds from other NNTP servers are rejected

Rate at which commands are issued by clients connected via the NNTP external network interface

Newsfeed Messages Sent is the total number of messages sent from the information store to other NNTP servers by the Internet News Service since startup.

Newsfeed Messages Sent/sec is the rate at which messages are sent from the information store to other NNTP servers by the Internet News Service.

Newsfeed Bytes Sent is the total number of bytes sent from the information store to other NNTP servers by the Internet News Service since startup.

Newsfeed Bytes Sent/sec is the rate data is sent from the information store to other NNTP servers by the Internet News Service.

Newsfeed Outbound Rejected Messages is the total number of messages sent in newsfeeds to other NNTP servers that have been rejected as duplicates or due to errors since service startup.

NNTP Outbound Connections is the total number of outbound TCP/IP connections to other NNTP servers that have been made by the Internet News Service for push or pull newsfeeds since startup.

NNTP Current Outbound Connections is the current number of outbound TCP/IP connections from the Internet News Service to other NNTP servers for push or pull newsfeeds.

Number of article index table rows expired

Send Queue Size is the number of messages in the public information store's send queue.

Receive Queue Size is the number of messages in the public information store's receive queue.

Categorization Count is the number of categorizations that exist in the information store. Categorizations are created when a user creates a filtered view or performs a search. When the information store must maintain an excessive number of categorizations, performance can be affected.

Messages Delivered is the total number of messages delivered to all recipients since startup.

Message Recipients Delivered is the total number of recipients that have received a message since startup.

Messages Sent is the total number of messages sent to other storage providers via the message transfer agent (MTA) since startup.

Messages Submitted is the total number of messages submitted by clients since startup.

Single Instance Ratio is the average number of references to each message in the public information store.

Messages Delivered/min is the rate that messages are delivered to all recipients.

Message Recipients Delivered/min is the rate that recipients receive messages.

Messages Sent/min is the rate that messages are sent to other storage providers via the message transfter agent (MTA).

Messages Submitted/min is the rate that messages are submitted by clients.

Average Time for Delivery is the average time between the submission of a message to the information store and submission to the messages transfer agent (MTA) for the last 10 messages.

Average Time for Local Delivery is the average time between the submission of a message to the information store and the delivery to all local recipients (recipients on the same server) for the last 10 messages.

Total Size of Recoverable Items is the total size in kilobytes of items retained for Item Recovery

Total Count of Recoverable Items is the total number of items retained for Item Recovery

Replication Messages Sent is the total number of replication messages that have been sent to other servers since service startup.

Replication Folder Tree Messages Sent is the number of replication messages due to public folder hierarchy changes that have been sent to other servers since service startup.

Replication Folder Tree Messages Sent is the number of replication messages due to public folder hierarchy changes that have been sent to other servers since service startup.

Replication Folder Data Message Messages sent is the number of replication messages due to changes to items in public folders that have been sent to other servers since service startup.

Replication Message Changes Sent is the number of changes to items in public folders that have been replicated to other servers since service startup.

Replication Status Messages Sent is the number of replication status request or response messages that have been sent to other servers since service startup.

Replication Backfill Requests Sent is the number of backfill request replication messages that have been sent to other servers since service startup.

Replication Backfill Data Messages Sent is the number of replication messages sent in response to backfill requests from other servers since service startup.

Replication Messages Received is the total number of replication messages received from other servers since service startup.

Replication Folder Tree Messages Received is the number of replication messages due to public folder hierarchy changes that have been received from other servers since service startup.

Replication Folder Changes Received is the number of folder changes that have been replicated from other servers since service startup.

Replication Folder Data Messages Received is the number of replication messages due to changes to items in public folders that have been received from other service since service startup.

Replication Message Changes Received is the number of changes to items in public folders that have been received from other servers since service startup.

Status Messages Received is the number of replication status request or response messages that have been received from other servers since service startup.

Replication Backfill Requests Received is the number of backfill request replication messages that have been received from other servers since service startup.

Replication Backfill Data Messages Received is the number of replication messages received from other servers in response to backfill requests since service startup.

Replication Receive Queue Size is the number of replication messages waiting to be processed.

Number of messages expired from public folders

Client Logons is the number of clients (including system processes) currently logged on.

Active Client Logons is the number of clients that performed any action within the last ten minute time interval.

Peak Client Logons is the maximum number of concurrent client logons since service startup.

Folder opens/sec is the rate that requests to open folders are submitted to the information store.

Message Opens/sec is the rate that requests to open messages are submitted to the information store.

Send Queue Size is the number of messages in the private information store's send queue.

Receive Queue Size is the number of messages in the private information store's receive queue.

Categorization Count is the number of categorizations that exist in the private information store. Categorizations are created when a user creates a filtered view or performs a search. When the information store must maintain an excessive number of categorizations, performance can be affected.

Messages Delivered is the total number of messages delivered to all recipients since startup.

Message Recipients Delivered is the total number of recipients that have received a message since startup.

Messages Sent is the total number of messages sent to other storage providers via the message transfter agent (MTA) since startup.

Messages Submitted is the total number of messages submitted by clients since service startup.

Single Instance Ratio is the average number of references to each message in the private information store.

Messages Delivered/min is the rate that messages are delivered to all recipients.

Message Recipients Delivered/min is the rate that recipients receive messages.

Messages Sent/min is the rate that messages are sent to other storage providers via the message transfter agent (MTA).

Messages Submitted/min is the rate that messages are submitted by clients.

Average Delivery Time is the average time between the submission of a message to the information store and submission to the message transfer agent (MTA) for the last 10 messages.

Average Local Delivery Time is the average time between the submission of a message to the information store and the delivery to all local recipients (recipients on the same server) for the last 10 messages.

Total Size of Recoverable Items is the total size in kilobytes of items retained for Item Recovery

Total Count of Recoverable Items is the total number of items retained for Item Recovery

Client Logons is the number of clients (including system processes) currently logged on.

Active Client Logons is the number of clients that performed any action within the last ten minute time interval.

Peak Client Logons is the maximum number of concurrent client logons since the service started.

Total number of messages delivered locally

Rate at which messages are delivered locally

Folder Opens/sec is the rate that requests to open folders are submitted to the information store.

Message Opens/sec is the rate that requests to open messages are submitted to the information store.

Access Violations is the number of times that directory service write operations were refused for security reasons.

AB Browses/sec is the rate at which Address Book clients perform browse operations.

AB Reads/sec is the rate at which Address Book clients perform read operations.

ExDS Reads/sec is the rate at which Extended Directory Service clients perform read operations.

Replication Updates/sec is the rate at which replication updates are applied by the local directory service. This indicates how much replication activity is occuring on the server.

Threads in Use is the current number of threads in use by the directory service (different than the number of threads in the directory service process). Threads in Use is the number of RPC-generated threads currently in API calls and can be used to indicate whether additional processors could be of benefit.

AB Writes/sec is the rate at which Address Book clients perform write operations.

ExDS Writes/sec is the rate at which Extended Directory Service clients perform write operations.

ExDS Client Sessions is the number of connected Extended Directory Service client sessions. This indicates the number of connections from other Microsoft Exchange services and the Microsoft Exchange Administrator program.

AB Client Sessions is the number of connected Address Book client sessions.

Pending Replication Synchronizations is the number of directory synchronizations that are queued for this server but not yet processed.

Remaining Replication Updates is the number of object modifications received in the current directory replication update packet that have not yet been applied to the local server.

This is the number of objects replicated out per second from this machine to other Directory Servers.

Number of directory objects read per second by the View Consistency Checker.

Number of Address Book View containers created per second by the View Consistency Checker.

Number of directory objects modified per second by the View Consistency Checker.

Total number of LDAP searches performed since the DSA started.

LDAP Searches/sec is the rate at which LDAP clients perform search operations.

Upstream Bytes Sent/sec is the rate at which data bytes are sent by the Web Proxy Server to remote servers on the Internet or to a chained Web Proxy Server.

Upstream Bytes Received/sec is the rate at which data bytes are received by the Web Proxy Server from remote servers on the Internet or from a chained Web Proxy Server in response to requests from this Proxy.

Upstream Bytes Total/sec is the sum of Inet Bytes Sent/sec and Bytes Received/sec. This is the total rate for all bytes transferred between the Proxy Server and remote servers on the Internet or a chained Web Proxy Server.

Client Bytes Sent/sec is the rate at which data bytes are sent by the Web Proxy Server to Web Proxy clients.

Client Bytes Received/sec is the rate at which data bytes are received by the Web Proxy Server from Web Proxy clients.

Client Bytes Total/sec is the sum of Client Bytes Sent/sec and Bytes Received/sec. This is the total rate for all bytes transferred between the Web Proxy Server and Web Proxy clients.

SSL Client Bytes Sent/sec is the rate at which Secure Sockets Layer (SSL) data bytes are sent by the Web Proxy Server to secured Web Proxy clients.

SSL Client Bytes Received/sec is the rate at which Secure Sockets Layer (SSL) data bytes are received by the Web Proxy Server from secured Web Proxy clients.

SSL Client Bytes Total/sec is the sum of SSL Client Bytes Sent/sec and Bytes Received/sec. This is the total rate for all bytes transferred between the Web Proxy Server and secured Web Proxy clients.

Socks Client Bytes Sent/sec is the rate at which data is transferred by the Web Proxy Server from Socks clients to connected servers.

Socks Client Bytes Received/sec is the rate at which data is transferred by the Web Proxy Server from connected servers to Socks clients.

Socks Client Bytes Total/sec is the sum of Socks Client Bytes Sent/sec and Bytes Received/sec. This is the total rate for all bytes transferred between the Web Proxy Server and Socks clients.

Current Users is the number of users currently connected to the Web Proxy Server.

Total Users is the total number of users that have ever connected to the Web Proxy Server.

Maximum Users is the maximum number of users that have connected to the Web Proxy Server simultaneously.

Ftp Requests is the number of Ftp requests that have been made to the Web Proxy Server.

Gopher Requests is the number of Gopher requests that have been made to the Web Proxy Server.

Http Requests is the number of Http requests that have been made to the Web Proxy Server.

Total Requests is the total number of requests that have ever been made to the Web Proxy Server.

Total Successful Requests is the total number of requests that have been successfully processed by the Web Proxy Server.

Total Failing Requests is the total number of requests that have failed to be processed by the Web Proxy Server due to errors. Errors can be the result of the Web Proxy Server failing to locate a requested server URL on the Internet or because the client failed to be authorized access to the requested URL.

Total Cache Fetches is the total number of requests that have been served by using cached data from the Web Proxy Server cache.

Total Upstream Fetches is the total number of requests that have been served by using data retrieved from servers on the Internet or from a chained Web Proxy Server.

Cache Hit Ratio is the percentage of requests that have been served using cached data out of the total number of requests to the Web Proxy Server.

Sites Denied is the total number of Internet sites to which the Web Proxy Server has denied access.

Sites Granted is the total number of Internet sites to which the Web Proxy Server has granted access.

DNS Cache Entries is the current number of DNS domain name entries cached by the Web Proxy Server.

DNS Retrievals is the total number of DNS domain names that have been retrieved by the Web Proxy Server.

DNS Cache Flushes is the total number of times that the DNS domain name cache has been flushed or cleared by the Web Proxy Server.

DNS Cache Hits is the total number of times a DNS domain name was found within the DNS Cache.

DNS Cache Hits % is the percentage of DNS domain names served from the Web Proxy Server cache, from the total of all DNS entries that have been retrieved by the Web Proxy Server.

HTTPS sessions is the total number of HTTP-secured sessions serviced by the Secure Sockets Layer (SSL) tunnel.

SNEWS sessions is the total number of SNEWS sessions serviced by the Secure Sockets Layer (SSL) tunnel.

Unknown SSL sessions is the total number of unknown Secure Sockets Layer (SSL) sessions serviced by the SSL tunnel.

Total SSL sessions is the total number of Secure Sockets Layer (SSL) sessions serviced by the SSL tunnel.

Socks sessions is the current number of active sessions between Socks clients and connected servers serviced by the Web Proxy Server.

Total Socks Sessions is the accumulative number of Socks sessions serviced by the Web Proxy Server.

Total Successful Socks Sessions is the accumulative number of Socks requests that were successfully serviced by the Web Proxy Server.

Total Failed Socks Sessions is the accumulative number of Socks requests that were were not serviced by the Web Proxy Server because the client did not have the access rights to satisfy the request, or an initial protocol error.

Thread Pool Size is the number of threads in the thread pool.

Thread Pool Failures is the number of requests rejected because the thread pool was overcommitted.

SSL sessions scavenged is the number of Secure Sockets Layer (SSL) sessions closed because of idle timeout and excessive SSL demand.

Thread Pool active sessions is the number of sessions being actively serviced by thread pool threads.

Array Bytes Sent/sec is the rate at which data bytes are sent by the Web Proxy Server to other proxies within the same array.

Array Bytes Received/sec is the rate at which data bytes are received by the Web Proxy Server from other Proxies within the same array in response to requests from this Proxy.

Array Bytes Total/sec is the sum of Array Bytes Sent/sec and Bytes Received/sec. This is the total rate for all bytes transferred between the Proxy Server and other members of the same array.

Total Array Fetches is the total number of requests that have been served by requesting the data from another Web Proxy Server within this array.

Reverse Bytes Sent/sec is the rate at which data bytes are sent by the Web Proxy Server to web publishing servers in response to Reverse Proxy requests.

Reverse Bytes Received/sec is the rate at which data bytes are received by the Web Proxy Server from web publishing serverse in response Reverse Proxy requests.

Reverse Bytes Total/sec is the sum of Reverse Bytes Sent/sec and Bytes Received/sec. This is the total rate for all bytes transferred between the Proxy Server and web publishing servers in response to Reverse Proxy requests.

Total Reverse Fetches is the total number of Reverse Proxy requests that have been served by requesting the data from web publishing servers.

Requests/sec is the rate of incoming requests that have been made to the Web Proxy Server.

Failing Requests/sec is the rate of requests that have completed with some type of error.

Number of 'gethostbyname' and 'gethostbyaddr' API calls successfully returned. These are calls used to resolve host DNS domain names and IP addresses for WinSock Proxy connections.

Number of 'gethostbyname' and 'gethostbyaddr' API calls that have failed. These are calls used to resolve host DNS domain names and IP addresses for WinSock Proxy connections.

Number of 'gethostbyname' and 'gethostbyaddr' API calls pending resolution. These are calls used to resolve host DNS domain names and IP addresses for WinSock Proxy connections.

The number of active sessions for WinSock Proxy Server.

The total number of active TCP connections currently passing data. Connections pending or not yet established are counted elsewhere.

Total number of active UDP connections.

Total number of TCP connections pending. These are connections awaiting completion between WinSock Proxy Server and remote computers.

Total number of TCP connections awaiting an inbound 'connect' call to complete. These are connections placed by WinSock Proxy (WSP) to a client after WSP accepts a connection from the Internet on a listening socket.

Number of connection objects that wait for TCP connection from WinSock Proxy clients.

Number of connection objects that wait for TCP connections from remote Internet computers.

The number of WinSock Proxy worker threads that are currently alive.

The number of WinSock Proxy worker threads that are available (waiting in completion port queue).

Number of bytes read by the data-pump per second.

Number of bytes written by data-pump per second.

The number of mappings available for UDP connections.

DNS Cache Entries is the current number of DNS domain name entries cached by the Web Proxy Server.

DNS Cache Hits is the total number of times a DNS domain name was found within the DNS Cache.

DNS Cache Flushes is the total number of times that the DNS domain name cache has been flushed or cleared by the Web Proxy Server.

DNS Retrievals is the total number of DNS domain names that have been retrieved by the Web Proxy Server.

DNS Cache Hits % is the percentage of DNS domain names served from the Web Proxy Server cache, from the total of all DNS entries that have been retrieved by the Web Proxy Server.

URLs in Cache is the current number of URLs in the URL Cache.

Bytes in Cache is the total number of bytes currently contained in the URL Cache.

Total Bytes Cached is the cumulative number of bytes that have been placed into the URL Cache.

Total Bytes Retrieved is the cumulative number of bytes that have been retrieved from the URL Cache.

Total URLs Cached is the cumulative number of URLs that have been stored into the URL Cache.

Total URLs Retrieved is the cumulative number of URLs that have been retrieved from the URL Cache.

Max Bytes Cached is the maximum number of bytes that have been stored in the URL Cache.

Max URLs Cached is the maximum number of URLs that have been stored in the URL Cache.

Total Actively Refreshed URLs is the cumulative number of popular URLs in the URL cache that have been preemptively refreshed from the Internet.

Total Bytes Actively Refreshed is the total of bytes that have been retrieved from the Internet to preemptively refresh popular URLs in the URL cache.

URL Retrieve Rate is the rate at which URLs are retrieved from the URL cache.

Bytes Retrieved Rate is the rate at which bytes of data are retrieved from the URL cache.

URL Commit Rate is the rate at which URLs are commited to the URL cache.

Bytes Commited Rate is the rate at which bytes of data are commited to the URL cache.

Active URL Refresh Rate is the rate at which popular URLs in the URL cache are preemptively refreshed from the Internet.

Active Refresh Bytes Rate is the rate at which bytes of data are retrieved from the Internet to preemptively refresh popular URLs in the URL cache.

The number of telephone lines serviced by this computer.

The number of telephone devices serviced by this computer.

The number of telephone lines serviced by this computer that are currently active.

The number of telephone devices that are currently being monitored.

The rate of outgoing calls made by this computer.

The rate of incoming calls answered by this computer.

The number of applications that are currently using telephony services.

Current outgoing calls being serviced by this computer.

Current incoming calls being serviced by this computer.

A table containing performance information for instances of 'rAS-Port' objects.

Performance information for one particular instance of 'rAS-Port' object.

Index.

Instance name.

The number of bytes transmitted total for this connection.

The number of bytes received total for this connection.

The number of data frames transmitted total for this connection.

The number of data frames received total for this connection.

The compression ratio for bytes being transmitted.

The compression ratio for bytes being received.

The total number of CRC Errors for this connection. CRC Errors occur when the frame received contains erroneous data.

The total number of Timeout Errors for this connection. Timeout Errors occur when an expected is not received in time.

The total number of Serial Overrun Errors for this connection. Serial Overrun Errors occur when the hardware cannot handle the rate at which data is received.