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| MQ Performance Issues |
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| felixliu |
 Posted: Mon Jun 28, 2004 5:45 am Post subject: MQ Performance Issues |
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Newbie
Joined: 07 Sep 2003
Posts: 9
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Hello, all
And now I'm trying to improve MQ performance in AIX server. I had written a java testing code to send 1000 messages serially to queue through a channel with SVRCONN type and TCPIP protocol. Because I found that the same testing code on winXP need 40ms, while it on AIX5.1 need 210ms.
Follow mq6d doc from MQ suppoctPacs, I had tuned these parameters, But it seems the the performance can't be improved. I rebooted MQ server(endmqm,then strmqm) when I changed the qm parameter each time.
WindowsXP(My ThinkPad T40, 512M)
AIX V5.1(650, 2*CPU, 2G Mem)
Before tuning: WindowsXP: 32s, AIX: 210ms
Change queue manager Channel parameter: pipeline=2:
WindowsXP: 44s, AIX: 210ms
Change queue manager LogBufferPages parameter: =512:
WindowsXP: 44s, AIX: 210ms
How can I improve MQ performance on AIX? My runtime environment is run AIX V5.1. 
Could anyone help me? Any suggestion is welcome! Thanks a lot. |
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| PeterPotkay |
| Posted: Mon Jun 28, 2004 7:13 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Your XP MQ is version 5.3. You AIX MQ is version 5.1. Comparing 5.1 to 5.3 is not fair. There have been many improvements in performance from 5.1 to 5.2 to 5.3.
If your business reasons do not require it, make sure the messages are not persistent. NonPersistent messages will perform much better than persistent messages. The difference is more noticable in the old versions of MQ.
_________________
Peter Potkay
Keep Calm and MQ On |
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| vennela |
| Posted: Mon Jun 28, 2004 7:28 am Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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| I think felixliu is saying he is running AIX 5.1 (OS Version is 5.1) and not MQ. I would assume he has same version of MQ on both the boxes |
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| felixliu |
| Posted: Mon Jun 28, 2004 5:18 pm Post subject: |
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Newbie
Joined: 07 Sep 2003
Posts: 9
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Hello, Peter and Vennela,
Yes. My MQ version is V5.3.1 on each platform. AIX is V5.1.
I am strange why MQ performance will be down when it run on S/6000. Also, I edit AIX system parameter:
export AIXTHREAD_COND_DEBUG=OFF
export AIXTHREAD_MUTEX_DEBUG=OFF
export AIXTHREAD_RWLOCK_DEBUG=OFF
It is no helpful.
I found that I post wrong data, here is the new:
Before tuning: WindowsXP: 32ms, AIX: 210ms
Change queue manager Channel parameter: pipeline=2:
WindowsXP: 44ms, AIX: 210ms
Change queue manager LogBufferPages parameter: =512:
WindowsXP: 44ms, AIX: 210ms |
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| bower5932 |
| Posted: Tue Jun 29, 2004 5:02 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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I thought pipelining of channels was done on qmgr to qmgr channels and not on client to qmgr channels.
With such a big gap, I'd double-check all of the obvious things:
- you start with both queues empty
- you are using the same persistence on both messages
- there isn't something running on one system causing contention |
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