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| OSSGeek |
 Posted: Tue Nov 24, 2009 9:05 pm Post subject: very slow MQSeries (Linux Server) |
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Newbie
Joined: 24 Nov 2009
Posts: 3
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Hi,
I've setup a trial 90day MQ server v7.0.1 on my RHEL 5 linux box and now after 2 days i get very very slow response time from my MQ server. How can I trace where the problem is? When I monitor my server I see AMQRMPPA process has high cpu usage...
I got very good response time right after installation but it's strange after 2 days without any change in application and server configuration I get a very bad response time  |
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| OSSGeek |
| Posted: Wed Nov 25, 2009 3:53 am Post subject: |
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Newbie
Joined: 24 Nov 2009
Posts: 3
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When I start the service I see lots of FDC files...
Probe Id XY077003
Probe Type MSGAMQ6119
Probe Severity 2
Probe Description AMQ6119: An internal WebSphere MQ error has occurred ('43 - Identifier removed' from semop.) |
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| Gaya3 |
| Posted: Wed Nov 25, 2009 4:05 am Post subject: |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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| exerk |
| Posted: Wed Nov 25, 2009 4:18 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| Gaya3 wrote: |
| like wise please search... |
Likewise, please read the posts more closely; the link you quote is Solaris and HP-UX specific
| OSSGeek wrote: |
| ...RHEL 5 linux box... |
OSSGeek, I advise you to run the mqconfig script (available HERE) to be sure your kernel settings are correct.
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| OSSGeek |
| Posted: Wed Nov 25, 2009 5:27 am Post subject: |
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Newbie
Joined: 24 Nov 2009
Posts: 3
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Thanks friends, "amqiclen -x" was the trick 
Now everything looks just fine...
Thanks exerk for the great link  |
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| mvic |
| Posted: Wed Nov 25, 2009 6:26 am Post subject: |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| OSSGeek wrote: |
Thanks friends, "amqiclen -x" was the trick
Now everything looks just fine... |
amqiclen is a non-documented tool used by the MQ installer code to report whether any processes are attached to MQ's shared memory segments. This makes your install safer.
It also has a -x switch which does other things, again non-documented but mainly consisting of attempts to delete unreferenced shared memory and semaphores.
IBM doesn't generally advise running amqiclen. Sometimes it may be advised by a support representative for a specific reason, but this is rare.
Specifically in this case I can't see how it could have helped with a performance issue. |
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| camauz |
| Posted: Thu Nov 26, 2009 4:58 am Post subject: amqiclen |
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Acolyte
Joined: 20 Aug 2007
Posts: 52
Location: Mojan, Italy
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| mvic |
| Posted: Thu Nov 26, 2009 5:48 am Post subject: Re: amqiclen |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| camauz wrote: |
| Not so undocumented... |
Yep, amqiclen is mentioned all over the place but is still a non-documented internal-use tool. It may be advised by support (hence that page which gives some details) but otherwise is not part of what users are expected to ever have to run. |
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