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MQSeries.net Forum Index » General IBM MQ Support » message length performance recommendations

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DonCorleone
PostPosted: Tue Oct 19, 2004 1:08 am    Post subject: message length performance recommendations Reply with quote

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Joined: 19 Oct 2004
Posts: 1
Talking about performance, are there any recommendations about message length? I heard something like "it's better to use many small messages rather than a big one".

The environment is zOS & CICS. Obviously, the XML parser provided by COBOL LE 3.3 has much to say here, but what I want to know is MQ's opinion managing large messages under CICS. Would there be a critical decrease of performance if changing the message length from 100KB to 4MB?
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JT
PostPosted: Tue Oct 19, 2004 6:17 am    Post subject: Reply with quote

Padawan

Joined: 27 Mar 2003
Posts: 1564
Location: Hartford, CT.
I think the z/OS performance supportpac MP1D has details regarding message size.
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PGoodhart
PostPosted: Tue Oct 19, 2004 7:08 am    Post subject: Reply with quote

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Joined: 17 Jun 2004
Posts: 278
Location: Harrisburg PA
The bigger perfomance hit is persistent messages. We run 4 M messages as a standard upper limit and it really seems fine. (We segement larger messages, and work around the mainframe limitation by using a broker).
The perfomance report mentioned above does have the information in great detail.
Generally more, but smaller messages are more efficient then less larger messages.
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