topic Limit process memory usage per process in Operating System - HP-UX

Limit process memory usage per process

Kevin Moran_1 — Wed, 24 Sep 2003 11:38:38 GMT

Currently, I have a unix process in production whereby the amount of data being loaded is about to exceed the maxdsiz kernel parameter setting. I really would only like to increase the memory limit for a specific process without enabling for all processes is there a way to do this? We are not using PRM.

Re: Limit process memory usage per process

Bill Hassell — Wed, 24 Sep 2003 14:45:08 GMT

This is quite easy. Set maxdsiz to a large value, perhaps 900 megs. Then in /etc/profile set ulimit to the number of kbytes you'd like as a limit for everyone as in:

ulimit -Sd 100000

(for 100 megs) Then for a specific process, start the process with ulimit -Sc 500000 so this one process gets to use 500 megs.

Re: Limit process memory usage per process

Bill Hassell — Wed, 24 Sep 2003 14:50:10 GMT

Oops, typo:

ulimit -Sd 500000

which sets maxdsiz to 500 megs temporarily.