Service pack informationTo resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
Hotfix informationA supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows 2000 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone 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.
The English version of this hotfix has the file attributes (or later file attributes) 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 item in Control Panel.
Date Time Version Size File name
17-Dec-2002 16:51 220.127.116.119 280,336 Mq1repl.dll
21-Oct-2002 18:38 18.104.22.1689 14,096 Mq1sync.exe
17-Dec-2002 16:49 22.214.171.1244 75,408 Mqac.sys
17-Dec-2002 16:51 126.96.36.1990 217,360 Mqads.dll
29-Oct-2002 16:50 188.8.131.521 25,360 Mqbkup.exe
17-Dec-2002 16:52 184.108.40.2060 76,560 Mqdscli.dll
17-Dec-2002 16:52 220.127.116.115 41,744 Mqdssrv.dll
21-Oct-2002 18:38 18.104.22.1689 98,064 Mqmig.exe
17-Dec-2002 16:51 22.214.171.1249 265,488 Mqmigrat.dll
17-Dec-2002 16:51 126.96.36.1990 222,480 Mqoa.dll
17-Dec-2002 16:52 188.8.131.522 8,464 Mqperf.dll
17-Dec-2002 16:52 184.108.40.2064 424,720 Mqqm.dll
17-Dec-2002 16:51 220.127.116.116 102,672 Mqrt.dll
17-Dec-2002 16:51 18.104.22.1689 70,928 Mqsec.dll
17-Dec-2002 16:51 22.214.171.1242 23,824 Mqupgrd.dll
17-Dec-2002 16:51 126.96.36.1993 110,352 Mqutil.dll
17-Dec-2002 16:51 188.8.131.528 64,784 Msmq.cpl
This hotfix lets you raise or lower the kernel memory threshold in Message Queuing.
In certain circumstances, you may want to raise the threshold because an application, a driver, or a system component is consuming kernel memory. Garbage collection is done by the kernel only when the paged pool memory consumption reaches 80 percent. However, Message Queuing stops functioning at 80 percent of paged pool memory consumption. If you set the kernel memory threshold above 80 percent, this makes sure that Message Queuing does not go into "low memory mode" until the Windows Memory Manager starts cleanup.
In other circumstances, you may want to lower the threshold to limit the amount of kernel memory that is used by Message Queuing.
To change the kernel memory threshold, follow these steps:
- Install the hotfix that is mentioned in this article.
- Add the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\MSMQ\Parameters\KernelMemThreshold of data type DWORD
The default is 80. The value can range from 1 to 99. Anything else is converted to 80.
Note When you create this value the Decimal option must be selected. If you select Hexidecimal, the default value of 80 is used.
- Install the hotfix that is mentioned in this article on each cluster node.
- Add the following registry key of data type DWORD on each cluster node:HKEY_LOCAL_MACHINE\Software\Microsoft\MSMQ\Parameters\KernelMemThreshold
- Add the following registry key of data type DWORD on the active node in the cluster:HKEY_LOCAL_MACHINE\Software\Microsoft\MSMQ\Clustered QMs\MSMQ$[Clustered resource name]\Parameters\KernelMemThreshold
Article ID: 811308 - Last Review: Mar 15, 2008 - Revision: 1