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MQSeries.net Forum Index » General IBM MQ Support » Event Viewer Warning message

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rcrippen
PostPosted: Thu Sep 09, 2004 10:33 am    Post subject: Event Viewer Warning message Reply with quote

Apprentice

Joined: 01 Aug 2002
Posts: 45
Location: Rochester, NY
Periodically (every 10 minutes), a warning event message is logged to the event viewer on a Windows 2000 server running WebSphere MQ V5.3 CSD06. Here is the event message:

The data buffer created for the "MQSeriesServices" service in the "D:\Program Files\IBM\WebSphere MQ\bin\amqmperf.dll" library is not aligned on an 8-byte boundary. This may cause problems for applications that are trying to read the performance data buffer. Contact the manufacturer of this library or service to have this problem corrected or to get a newer version of this library.

Has anyone seen this occurance and/or know how to stop the warnings?

I know they are just warnings, but I know that there is going to be questions asked when the production environments go live for the projects I'm supporting.

Thanks in advance,

Rob Crippen
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JasonE
PostPosted: Thu Sep 09, 2004 11:13 am    Post subject: Reply with quote

Grand Master

Joined: 03 Nov 2003
Posts: 1220
Location: Hursley
Quote:
In preparing for 64 bit systems MS introduced a restriction and check
for buffers returned to perfmon needed to 8-byte aligned, The event is
logged in the event log if the MS thinks that the data is not aligned
correctly (on all the current systems the message is only a warning and
can be safely ignored).
We have checked the alignment of the Mq buffers (returned to perfmon by
the amqmperf.dll) a number of times but have not been able to identify
any mis-aligned buffers. We believe that perfmon may sometimes be
issueing this message when a mis-alignment has been detected in another
dll in the chain of dlls loaded by it.
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