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How to set semaphore limits

In some scenario, the application had a semaphore limit issue. We need to increase some semaphore limits, such as semaphore array.

How do we set the semaphore limits?

What values should we set for the semaphore limits?

# ipcs -ls

------ Semaphore Limits --------
max number of arrays = 1024              ## SEMMNI
max semaphores per array = 250           ## SEMMSL
max semaphores system wide = 256000      ## SEMMNS
max ops per semop call = 32              ## SEMOPM
semaphore max value = 32767

External FAQ

How to set semaphore limits

Setting Semaphore Parameters

How to set the semaphore values on LINUX

Check semaphore

How to Change Kernel Semaphore Limits in CentOS/RHEL

Add semaphore count and other ipcs limits to health monitoring

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