This article was previously published under Q276081
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The Exchange 2000 Server Information Store service may respond sluggishly and may consume anywhere from 90 to 100 percent of CPU time. Clients may also stop responding (the cursor is displayed as an hourglass). Outstanding remote procedure call (RPC) requests to the information store are consistently high during this time.
The sluggish performance continues during high load time. The Information Store service recovers after the load is reduced.
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
The English version of this fix should have the following file attributes or later:
Component: Exchange Memory Manager
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server.
This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 1.
Contention on Exchmem heaps by realloc cause excessive context switching