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Solves these pesky errors you see in the Apache log:
[Fri Jun 28 17:51:00 2013] [emerg] (28)No space left on device: Couldn't create accept lock (/monsoon/opt/apache2/logs/accept.lock.356) (5)
Naturally, can be used to get rid of other semaphores. Note: change the apache user in accordance to your ENV.
It can work for message queue, semaphore set or shared memory just changing the parameter.
Get information about Shared Memory Segments, Semaphore Arrays and Message Queues.