What is the maximum value of pid_max which can be set in RHEL4?

Solution Unverified - Updated -

Issue

  • What is the maximum value of pid_max which can be set in Red Hat Enterprise Linux Server 4?
  • Value should be high enough, but when trying to set to more than 32768, it fails with the following error:
[root@host ~]# sysctl -w kernel.pid_max=131068
error: unknown error 22 setting key 'kernel.pid_max'

Environment

  • Red Hat Enterprise Linux 4
  • kernel-2.6.9-103.EL-i686

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