Process memory limit

Costea · 08-18-2001, 08:11 AM

Hi, I have RedHat 7.0 and I'm wondering how to make a process not to be able to use more that X Mb of memory. If it does I want that process killed.

Costea

trickykid · 08-19-2001, 06:20 PM

not sure about memory limits .... but you can set the priority of a process with the nice command.... that might a solution

man nice for more info....

neil · 08-20-2001, 05:36 AM

Not sure how to use it.
But check out the man page for bash and look for ulimit.
Try ulimit on its own from the command line and see what its set to. Mine says unlimited. I think you can set limits on system resources with this.

trickykid · 08-20-2001, 01:03 PM

ulimit sets the limit on a particular file size, not memory used on it.

crabboy · 08-22-2001, 08:58 PM

ulimit is a built in command in the shell. It will restrict any processes from exceeding the set criteria. You have the following options, memory included:

Code:

# ulimit -a
core file size (blocks)     0
data seg size (kbytes)      unlimited
file size (blocks)          unlimited
max locked memory (kbytes)  unlimited
max memory size (kbytes)    unlimited
open files                  1024
pipe size (512 bytes)       8
stack size (kbytes)         8192
cpu time (seconds)          unlimited
max user processes          1024
virtual memory (kbytes)     unlimited

Gary

crabboy · 08-22-2001, 09:00 PM

I forgot to mention. Do a man on bash and search for ulimit.

Druaga · 05-25-2002, 10:36 PM

what does "max CPU time" mean exactly??

paracelsus · 09-24-2006, 09:37 AM

Quote:

Originally Posted by Druaga

what does "max CPU time" mean exactly??

It means maximum time of the processor that is available to a single process. It is not the time of the process being alive; it's the time of the CPU that the process has used.

stress_junkie · 09-24-2006, 10:30 AM

If you are using PAM, and you probably are, then use the /etc/security/limits.conf file to establish process limits.

ulimit is a bash shell function. If you are using another shell then ulimit is not available.

unSpawn · 09-24-2006, 01:42 PM

Please do not revive stale threads unless there's an urgent reason to.