Microsoft KB Archive/184699

= XADM Store.exe Working Set Performance Counter Keeps Growing =

Article ID: 184699

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 4.0 Standard Edition
 * Microsoft Exchange Server 5.0 Standard Edition
 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q184699





SYMPTOMS
The Working Set performance counter keeps increasing under a moderate load. When the load has subsided, the counter remains constantly high. It does not decrease memory used.



CAUSE
The Store.exe process has a counter called "Working Set." This counter displays the current amount of RAM used by the information store code and its related data. When memory is reserved, it does not free until the process is stopped and restarted; however, if Windows NT swaps some of these pages from RAM to disk, the performance monitor value will decrease to reflect the change in the amount of RAM being used by the information store.

This is by design.



MORE INFORMATION
This memory is just reserved, not allocated. If the server is under stress from another application, these pages will be swapped to the page file to free up RAM, which will reduce the Working Set size.

Additional query words: PerfMon MSEXHCHANGEIS Information Store

Keywords: kbbug KB184699

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