FIX: You experience performance issues when your multithreaded application calls the PerformanceCounter.NextValue method

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A multithreaded application that collects performance counter data from a series of servers by calling the PerformanceCounter.NextValue method may experience performance issues. For example, the application may run slowly. Slow performance is particularly noticeable if the servers are located on different networks that have links of different speeds and one or more of these networks are slow networks.

When one link is slow, this link causes all performance counter collection requests to other servers--including servers that are on low latency local networks--to be blocked, although the performance counter collection requests are running in independent threads.

Software update information

A supported software update is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This software update may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Microsoft .NET Framework 1.1 service pack that contains this software update.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the software update. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


You must have the .NET Framework 1.1 installed to apply this software update.

Restart requirement

You do not have to restart your computer after you apply this software update.

Software update replacement information

This software update does not replace any other software updates.

File information

The English version of this software update has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date         Time   Version       Size       File name   ---------------------------------------------------------------------------------------------   13-Jan-2004  03:22  1.1.4322.987    258,048  Aspnet_isapi.dll   13-Jan-2004  03:22  1.1.4322.987     20,480  Aspnet_regiis.exe   13-Jan-2004  03:22  1.1.4322.987     32,768  Aspnet_state.exe   13-Jan-2004  03:22  1.1.4322.987     32,768  Aspnet_wp.exe   16-May-2003  00:49                   33,522  Installpersistsqlstate.sql   16-May-2003  00:49                   34,150  Installsqlstate.sql   13-Jan-2004  03:12  1.1.4322.987     94,208  Perfcounter.dll   14-Jan-2004  00:07  1.1.4322.987  1,220,608  System.dll   14-Jan-2004  00:07  1.1.4322.987    241,664  System.messaging.dll   14-Jan-2004  00:07  1.1.4322.987    323,584  System.runtime.remoting.dll   14-Jan-2004  00:07  1.1.4322.987    131,072  System.runtime.serialization.formatters.soap.dll   14-Jan-2004  00:07  1.1.4322.987  1,257,472  System.web.dll   14-Jan-2004  00:09  1.1.4322.987    819,200   14-Jan-2004  00:07  1.1.4322.987    569,344   14-Jan-2004  00:09  1.1.4322.987  1,339,392  System.xml.dll   13-Jan-2004  03:17                   14,472  Webuivalidation.js
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.
For additional information about the terminology that is used to describe Microsoft product updates, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 834672 - Last Review: 01/17/2015 06:07:51 - Revision: 2.1

Microsoft .NET Framework 1.1

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