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| Performance question |
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| strataguru |
 Posted: Thu Jan 29, 2004 7:25 am Post subject: Performance question |
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Novice
Joined: 09 Oct 2003
Posts: 14
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I am installing a product that utilizes mq series as middleware.
While doing an install test of the third party software - I've noticed that performance is about 15 times slower than at any other installations.
When mq has been taken out of the equation - the third party software runs as expected.
It appears that the third party process 'sleeps' when doing either a get or put - but I'm guessing at best.
Are there any mq tools to isolate this problem?
Thanks,
Robin |
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| pgorak |
| Posted: Fri Jan 30, 2004 5:35 am Post subject: |
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Disciple
Joined: 15 Jul 2002
Posts: 158
Location: Cracow, Poland
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Could you provide some details on the system architecture, e.g. what the 3rd party application does, does it block until it receives messages, etc.?
Piotr
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IBM Certified Solution Developer WebSphere MQ 5.3 |
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| strataguru |
| Posted: Fri Jan 30, 2004 7:23 am Post subject: |
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Novice
Joined: 09 Oct 2003
Posts: 14
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sure ....
the third party software reads messages from queue x, processes information, and then writes to queue a, b, and c.
there's no blocks - at least none i'm aware of.
hope this helps,
thanks! |
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| bower5932 |
| Posted: Fri Jan 30, 2004 7:27 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| I'd guess that the 3rd party program is issuing a get with a wait. If a message isn't available, it waits for it to come in which causes the delay that you are seeing. You could try running a large number of messages continually through the system to see if the throughput of the program increases. That will keep the get from sleeping. |
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| strataguru |
| Posted: Fri Jan 30, 2004 7:35 am Post subject: |
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Novice
Joined: 09 Oct 2003
Posts: 14
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true - there is a wait - but right now we're manually kicking the process off after we've loaded the queue with messages.
when i do a 'top' and see my process - it's almost always sleeping. when we've done a truss against the pid there's a lot of lock / waits.
i'm no s.a. (yet) so analyzing truss is a bit of a chore.
any other tools that would help me analyze what mq is up to? |
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