Memory Leak in Perfmon.exe Occurs Monitoring WINS Counters

• Microsoft Windows NT Server version 4.0

SYMPTOMS

After several days of monitoring your WINS server over the network with Performance Monitor, your server may stop responding. The only way to reclaim the lost memory is to restart your WINS server.

If you monitor your WINS server by running Performance Monitor locally, you may experience a memory leak in Perfmon.exe. You can reclaim the lost memory by quitting Performance Monitor.

RESOLUTION

Perform one of the following to work around this problem:

• Do not monitor WINS counters.
• Run Performance Monitor locally rather than across the network. While you experience a memory leak in this scenario, the memory is returned when you exit Performance Monitor.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 4.0. A supported fix is now available, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.