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| Mq on linux -> Semaphores |
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| DEEPThought |
 Posted: Thu Jun 13, 2002 11:54 pm Post subject: Mq on linux -> Semaphores |
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Newbie
Joined: 04 Jun 2002
Posts: 4
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After many test, i found that is useful to increase the max nuber of semaphores in kernel parms.
(http://www.redhat.com/docs/manuals/linux/RHL-7.2-Manual/ref-guide/s1-proc-sysctl.html)
now my settings are
kernel.sem=250 64000 32 1024
and all now works, without messages like "semaphores are busy"
Hope this can help someone 
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"Under my flag, i live free." - Captain Harlock |
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| bduncan |
| Posted: Fri Jun 14, 2002 7:54 am Post subject: |
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Padawan
Joined: 11 Apr 2001
Posts: 1554
Location: Silicon Valley
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I don't have the MQ Linux Quick Beginnings manual handy, does anyone happen to know if it has a section on increasing kernel parameters much like the Quick Beginnings for Solaris does?
I've never had a problem running MQSeries on a vanilla redhat system, whereas I always run into trouble on Solaris unless I tweak the kernel parameters. Then again, I've never run the Linux queue manager under heavy load...
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Brandon Duncan
IBM Certified MQSeries Specialist
MQSeries.net forum moderator |
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| DEEPThought |
| Posted: Fri Jun 14, 2002 8:54 am Post subject: The problem is the NUMBER of Qmanagers |
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Newbie
Joined: 04 Jun 2002
Posts: 4
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my linux box has 16 Qmanagers and 8 Lotus Domino instances together.
The kernel settings of the Quick beginning is not set for high load environments.
Now i've seen that after 15-20 days my qmanagers start to freeze without leaving any message in the error logs...
have a nice w/e
Ale
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| arinduer |
| Posted: Thu Jun 20, 2002 8:45 am Post subject: |
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Acolyte
Joined: 13 Aug 2001
Posts: 50
Location: Phuket, Thailand
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16 QMGRS seem like alot to me. In my current position, and in my previous one, we were working towards one QMGR per server and creating new sets of MQ objects for each new project/business that needed MQ. Might be a neat test for you to consolidate into one QMGR and see if you still see problems.
--
eric |
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