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Ok, I don't really know anything about semaphores,
but I do know that our system is running out of them. If we use ipcs to
look at the semaphores it shows that 498 are in use, and the kernel is set to
only use 512. We want to increase this number, but are unsure how to do
this. We were told by Envoy to increase the size of the sem-mni and
sem-mns values. So we looked into this, and are now even more
confused. I can't find any reference to "sem_mns" anywhere--it's not in
any of the man pages or in dxkerneltuner. So what is this attribute, and
where do you change it? And the "sem-mni" attribute is set to 400 at boot
time, but the current value is 512. Where did this current value come
from? The /etc/sysconfigtab file says 400 as well. So I'm wondering
if I increase the sem-mni to something else and boot it, will the 512 number
come back? Also, what would be a good number to change it to?
We don't usually have this many semaphores at all,
only when we experience some sort of network issue, and then the semaphores go
up. Any info would be great...I hope this makes some sort of sense to
someone out there.
BTW: system= ES45 Tru64
5.1a
Jonathan Williams Unix Systems Administrator The Shubert Organization, Inc. |