XADM: Store Stops Responding with High CPU Usage for a Thread

• Microsoft Exchange Server, versions 5.0, 5.5

SYMPTOMS

The Microsoft Exchange Server Information Store service may appear to stop responding with 90 to 100 percent CPU time. Any clients may also stop responding (for example, the cursor turns into the hourglass symbol). When this problem occurs, the information store may fail to stop running when a service shutdown is attempted.

Viewing the individual threads of Store.exe using performance monitor will shows a single thread of the information store that appears to be running near 100 percent CPU usage continuously.

CAUSE

The information store attempted to decode a corrupt message from it's compressed RTF form into an Exchange message body form. The current decode logic did not handle compressed RTF corruption of this form and entered into a tight loop.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server versions 5.0.

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.

This fix has been posted to the following Internet location:

ftp://ftp.microsoft.com/bussys/exchange/exchange-public/fixes/Eng/Exchg5.0/Post-SP2-STORE/

S E R V P A C K

MORE INFORMATION

To view this in the Windows NT Performance Monitor (Perfmon.exe), follow these steps:

1. Start Perfmon.exe.



2. From the Edit menu, click Add To Chart.



3. In the Object dropdown list box, select Thread.



4. In the Counter list box, select %Processor Time.



5. In the Instance list box, select all values that contain "store."

Additional query words: CPU THREAD SPINNING UNRESPONSIVE SHUTDOWN PROBLEM

Keywords : XADM
Version : 5.0,5.5
Platform :
Issue type : kbbug