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MQSeries.net Forum Index » General IBM MQ Support » MQ Tuning v. 5.2.1 on 2000

MQ Tuning v. 5.2.1 on 2000

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EOTIII

Posted: Mon Apr 29, 2002 11:44 am Post subject:

Newbie

Joined: 28 Feb 2002
Posts: 8
Location: Richmond, VA

We are experiencing performance when our load increases. Out replyToQueue depth increases and out response time decreases. We are able to reproduce the problem with using test clients. We increased the LogBufferPages from 17 to 512 and the DefaultQBufferSize from 64000 to 640000. It did not seen to help. I am not sure if the changes took because I do not know of a way to check what the current setting is within the Qmanager exploror. Is there a way to check this? Do the queues have to be created after the registry changes is made? Any other ideas?

MQ 5.2.1 on Win2K
Thanks.
Ed

mrlinux

Posted: Mon Apr 29, 2002 12:06 pm Post subject:

Grand Master

Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA

Well you definitely have to cycle the qmanager, I think also to increase the Q buffer size the queue must be deleted/recreated after you up the qbuffer size

LOG Buffer changes are for persistant messages only. Are you using persistant messages ????
_________________
Jeff

IBM Certified Developer MQSeries
IBM Certified Specialist MQSeries
IBM Certified Solutions Expert MQSeries

[ This Message was edited by: mrlinux on 2002-04-29 13:08 ]

kolban

Posted: Mon Apr 29, 2002 1:01 pm Post subject:

Grand Master

Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA

If the reply to queue depth is increasing, doesn't that mean that the application is retrieving the messages fast enough? Wouldn't more application instancies be better? Where is the current bottleneck? How does CPU look?

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