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| Kernel parameters Solaris 2.8 and hanging receiver channel |
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| dgolding |
 Posted: Fri Aug 31, 2001 2:59 am Post subject: |
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Yatiri
Joined: 16 May 2001
Posts: 668
Location: Switzerland
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Hi,
We are having intermittent problems with a receiver channel on this box. the channel starts, hangs (does not receive any message, even though they are in the sending ends queue), then we get a timeout error in AMQERR log. I've done a 'truss' on the receiver process, and it seems to sitting on a "lwp_sema_wait" call. This has led me to believe our semaphore stuff is set up incorrectly, so I looked and found "semmap" wasn't defined.
According to the Quick Beginnings manual "semmap" should be "semmni + 2". However, Solaris is throwing away this definition because it is supposed to be obsolete. Could this have any relation on the problem?
We're on MQ5.2 CSD 1.
regards
Don Golding
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| bower5932 |
| Posted: Tue Sep 04, 2001 10:51 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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We've got a Sun 2.8 box with MQSeries 5.2 running on it. I just checked our sysdef -i and we have a semmap parameter. It is 2 larger than our semmni parameter. I believe that there is a typo in the manual and the section is incorrect (ie, semsys vs shmsys). Here is what we have in our /etc/system:
set semsys:seminfo_semmni = 1024
set semsys:seminfo_semmap = 1026
Also, if the parameters are spelled wrong, you'll get a warning message at ipl time, but you have to watch for it. |
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