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| Open Output Count |
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| Carl Bloy |
 Posted: Wed Dec 01, 2004 3:36 am Post subject: Open Output Count |
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Acolyte
Joined: 16 Dec 2003
Posts: 69
Location: England
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Hi,
I was wondering if anyone could shed some light on why we don't see an open output count on our cache queue using WMQI 2.1?
We have 4 request flows and 4 response flows, they all make use of a sub flow to put and get messages from the cache queue. We can see an open input count of 4, but nothing for open output count?
Our concern is one of performance, especially if for every put to the cache queue WMQI is opening, putting and closing the queue?
Any help appreciated.
Carl.
_________________
Regards
Carl |
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| kirani |
| Posted: Wed Dec 01, 2004 7:45 am Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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Carl,
I think, Broker opens and closes the output queue every time it does a MQPUT in MQOutput node. This is the reason you don't see Open Output Count on the output (MQPUT) queue.
You can put trace nodes in your message flows to find out which part of the message flow is having performance problems.
_________________
Kiran
IBM Cert. Solution Designer & System Administrator - WBIMB V5
IBM Cert. Solutions Expert - WMQI
IBM Cert. Specialist - WMQI, MQSeries
IBM Cert. Developer - MQSeries
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| Carl Bloy |
| Posted: Thu Dec 02, 2004 3:46 am Post subject: Solved |
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Acolyte
Joined: 16 Dec 2003
Posts: 69
Location: England
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It appears WMQI has some kind of limit on the number of handles it utilises per execution group, this limit seems to be about 50?
What we've done is split the execution group in 2 rather than use just one, and this has solved the problem, the open output count is now what we expected.
With 1 execution group we never got over 49 handles, with 2 execution groups we are using 68 handles.
_________________
Regards
Carl |
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| zpat |
| Posted: Thu Dec 02, 2004 4:49 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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| It is a good idea to have at least as many execution groups as processors (CPUs) in your broker server. |
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| kirani |
| Posted: Thu Dec 02, 2004 11:47 pm Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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I think you can use mqsichangeproperties to change the handle parameter. I don't know the exact syntax, but IBM support can help you with this.
_________________
Kiran
IBM Cert. Solution Designer & System Administrator - WBIMB V5
IBM Cert. Solutions Expert - WMQI
IBM Cert. Specialist - WMQI, MQSeries
IBM Cert. Developer - MQSeries
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