topic Re: ulimit parameters in Operating System - HP-UX

ulimit parameters

gab_in — Wed, 25 Jun 2008 10:24:26 GMT

Hi,

My customer has asked us to set the value for the following parameters to “unlimited” :

ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) 1048576
stack(kbytes) 131072
memory(kbytes) unlimited
coredump(blocks) 4194303
nofiles(descriptors) 2048

I am able to set the value of with ulimit with -d (data) -s(stack) and -c (coredump) but not able to change the nofiles to unlimited. It says "sh: ulimit: The specified value exceeds the user's allowable limit".

Can you please help on this and also let me know whether these setting will be permanent or will be changed after reboot?

Thanks
Gab

Re: ulimit parameters

Jeeshan — Wed, 25 Jun 2008 10:33:03 GMT

nofile is depend upon kernel parameter value nfile.

can u post the nfile parameter value currently set in your server.

Re: ulimit parameters

Mustafa Gulercan — Wed, 25 Jun 2008 10:48:28 GMT

hi;
here is the link that you can learn much more things from gurus';

http://forums12.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1214394138895+28353475&threadId=49882

regards,
mustafa

Re: ulimit parameters

gab_in — Wed, 25 Jun 2008 10:56:37 GMT

Thanks for the response.

We are running 11.31 version where nfile tunable is removed. Here I am sending the output of maxfiles and nproc.

# kctune |grep -i maxfiles
maxfiles 2048 Default
maxfiles_lim 4096 Default Immed
# kctune |grep -i nproc
nproc 4096 4096 Immed
#

Re: ulimit parameters

Jeeshan — Wed, 25 Jun 2008 11:31:00 GMT

check this link
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1229636

Re: ulimit parameters

Dennis Handly — Wed, 25 Jun 2008 16:29:55 GMT

>My customer has asked us to set the value for the following parameters to unlimited:

You can't. Most of these are limited by kernel parms.
Using forums search you can find these threads:
http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1156660
http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1194267
http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=892976
http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1236189

>Here I am sending the output of maxfiles and nproc.

You can use kctune to increase the two maxfiles parms.