The information in this article applies to:
SYMPTOMS
Windows NT simple network management protocol (SNMP) counters, such as
output queue length, may yield unlikely results in symmetric multiprocessor
(SMP) computers. The SNMP counters can be viewed using Snmputil.exe from
the Windows NT Resource Kit, or Performance Monitor using the Network
Interface object. For example:
snmputil getnext <server> public 2.2.1.21.1 NOTE: In normal operation, the output queue length counter should rarely rise above zero, when it does, it should return to zero very quickly. CAUSE
This problem occurs because Windows NT TCP/IP does not use interlocked
operations to maintain its statistics counters. The SNMP counters are
maintained in the TCP/IP code.
STATUSSpinlocks were left out of the TCP/IP code for counter operations intentionally for performance reasons. This will not be fixed. Additional query words: perfmon
Keywords : kbnetwork kbSDKPlatform kbSNMP nttcp kbbug3.51 NTSrv kbGrpNet |
Last Reviewed: September 10, 1999 © 2000 Microsoft Corporation. All rights reserved. Terms of Use. |