How to verify what processes are using semaphore counting now?

[wowsanta]

Hello,

Semaphore on one of my system was fulled as 100% even I set it as 5000. As I know 5000 is not too low value for running task. How I can check what process is using semaphore ? Is it possible from glance?

[Torsten.]

Have a look at

man ipcs

HTH!

[Torsten.]

Welcome to the forums!

Consider to choose another user name other than "How to check what processes are using semaphore?"

;-))

[Deepak Kulkarni]

Hi,

Yes, certainly. Please use glance -t.

And also as suggested by Torsten. Please use the different username. :-)


Regards
DK

[Sandeep_Chaudhary]

ipcs is better command to find semaphore
use "ipcrm -M {shmkey}" to kill

[Srinikalyan]

Hi,
Use ipcs|grep to find the used semaphore.
ipcrm -m to kill that one.

Thanks,
Srini

[wowsanta]

Hello all,
I'm sorry for using subject as my author name because of not used at this.

Thanks for your advice and would like to give one more question.

from output of ipcs -s -bcp, how I can verify what process is using specific KEY?
For example, can I know what process is using 0x4f0d1118 KEY?

IPC status from /dev/kmem as of Tue Jun 3 17:40:49 2008
T ID KEY MODE OWNER GROUP CREATOR CGROUP NSEMS
Semaphores:
s 0 0x4f0d1118 --ra------- root root root root 1
s 4097 0x410ce8b0 --ra-ra-ra- root root root root 1
s 4098 0x4e0c0002 --ra-ra-ra- root root root root 2
s 20483 0x410e110f --ra-ra-ra- root root root root 2

[Dennis Handly]

>from output of ipcs -s -bcp, how I can verify what process is using specific KEY?

You can't. Try "ipcs -sa". (I'm not even sure that will work.)

glance may be able to do it.