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тАО09-15-2008 11:42 PM
тАО09-15-2008 11:42 PM
I've searched the forum and can't find an answer.
The question is how can I determine what will be the impact of increasing the number of semaphores (sem_mni) on a Tru64 server ( V5.1 )?
I know the current sem_mni value is 32...we had just recently updated that from 16. The ongoing issue is that the Openview agent can't run because of a lack of semaphores.
I'm planning on doubling the number of semaphores to 64. But I don't have a sound reason for picking that number. So I have a secondary question....what's the best approach to determining a proper value for sem_mni?
Cheers
Solved! Go to Solution.
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тАО09-16-2008 12:47 AM
тАО09-16-2008 12:47 AM
SolutionI don't know what sort of value you should be picking, but a quick look at the man page for sys_attrs_ipc suggests that you might want to be looking at sem_msl as well as sem_mni.
sem_msl
Maximum number of System V semaphores that can be used by a single process at one time.
Default value: 25 (semaphores)
Minimum value: 0
Maximum value: INT_MAX
Hope this helps,
Regards,
Rob
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тАО09-16-2008 01:05 AM
тАО09-16-2008 01:05 AM
Re: sem_mni - semaphore
Read documentation of application you are going to run on that system, that is the best way.
So take a look at Openview client docs and set the parameters.
Do not worry, if you make the value bigger, nothing bad will happen.
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тАО09-16-2008 06:46 AM
тАО09-16-2008 06:46 AM
Re: sem_mni - semaphore
sem_mni = 1024
By oracle recomendation.
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тАО09-18-2008 01:05 AM
тАО09-18-2008 01:05 AM