ulimit changes and /etc/profile

rmount · 11-01-2005, 01:36 PM

Hello,

I've got a process that is running out of RAM. I've made a special account for the process so it's not running as root. The process runs perfectly as root (doesn't run out of memory).

So i'm down to making some tweaks to my users ulimit. I think these are done in /etc/profile. I've found the lines, changes them, yet my user is not getting the new settings i've entered.

Firstly, is this the proper way to make changes to ulimit settings?
Secondly, how do i make the changes take effect?

Thanks in advance!

Tinkster · 11-01-2005, 03:09 PM

Changes in /etc/profile will only be pulled if the shell
from which you operate is a login-shell.

If it's not you won't get the ulimit values. To find out
what ulimit is (in the environment you're running it, e.g.
from a xterm or a script) do a ulimit -a (or a
ulimit -a > /tmp/ulimits.$$ from a script)

Cheers,
Tink

rmount · 11-02-2005, 07:35 AM

Hi Tink,

Thanks for the reply. I'm trying to bump up non-root user ulimits. I'm running a game server that needs more ram. I use a shell script to start the process, it's using /bin/sh for processing.

ulimit -a when logged in as a non-root user shows:

Code:

core file size        (blocks, -c) 200000
data seg size         (kbytes, -d) 200000
file size             (blocks, -f) unlimited
max locked memory     (kbytes, -l) 4
max memory size       (kbytes, -m) 200000
open files                    (-n) 100
pipe size          (512 bytes, -p) 8
stack size            (kbytes, -s) 8192
cpu time             (seconds, -t) unlimited
max user processes            (-u) 20
virtual memory        (kbytes, -v) 200000

I'd like to double all the numbers. I *thought* that would mean editing the /etc/profile file . There's a ulimit line in there like this:

Code:

ulimit -n 100 -u 20 -m 200000 -d 200000 -s 8192 -c 200000 -v 200000 2>/dev/null

That line seems to be the source of the settings, i've changed it to this:

Code:

ulimit -n 200 -u 40 -m 400000 -d 400000 -s 8192 -c 400000 -v 400000 2>/dev/null

And rebooted the server and they aren't taking effect. Can anyone tell me why these aren't taking effect?

This is RHE 3.0, running cPanel

Thanks!

rmount · 11-02-2005, 07:43 AM

I got it working...

I did a grep for "ulimit" and found it in /etc/bashrc

/etc/bashrc has the same lines and those seem to be the ones doing the work. I adjusted those lines and now my ulimit -a as a user reflects the new limits.

Answered my own question