How to determine the value of SEMMNS since the limit is governed by the amount of RAM available on the system ?

Solution Unverified - Updated -

Issue

  • What is the maximum amount of value assigned to SEMMNS ?
  • How to calculate if SEMMNS assigned for semaphore is too much for a system ?
  • Should the value of SEMMNS be determined as per the kernel code:
#define SEMMNS  (SEMMNI*SEMMSL) /* <= INT_MAX max # of semaphores in system */

Environment

  • Red Hat Enterprise Linux(All version).

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