[NTLUG:Discuss] How to set process file limit?

[Cameron, Thomas]

> -----Original Message-----
> From: Neil Aggarwal [mailto:neil at JAMMConsulting.com]
> Sent: Thursday, March 04, 2004 5:27 PM
> To: NTLUG
> Subject: [NTLUG:Discuss] How to set process file limit?
> 
> 
> Hello:
> 
> I am getting a message from tomcat running on my
> RedHat 9 box that says "Too Many Open Files".
> 
> When I do ulimit -aH, I get:
> 
> core file size        (blocks, -c) unlimited
> data seg size         (kbytes, -d) unlimited
> file size             (blocks, -f) unlimited
> max locked memory     (kbytes, -l) unlimited
> max memory size       (kbytes, -m) unlimited
> open files                    (-n) 1024
> pipe size          (512 bytes, -p) 8
> stack size            (kbytes, -s) unlimited
> cpu time             (seconds, -t) unlimited
> max user processes            (-u) 7168
> virtual memory        (kbytes, -v) unlimited
> 
> Reading on the internet, I added this line to
> /etc/security/limits.conf:
> 
> *	hard	nofile	10240
> 
> and rebooted the server.
> 
> But, when I login and try the ulimit -aH command again,
> I still get 1024 for the open files limit.
> 
> Any ideas why this did not work?
> What can I do to increase it?
> 
> Thanks,
> 	Neil


You might also change the:

#define __FD_SETSIZE    1024

line in /usr/src/linux-2.4/include/linux/posix_types.h

Then recompile your kernel.  You need to make sure you understand all the ramifications of making this change.  To be honest, I am not 100% sure what that might do.

--
Thomas Cameron, RHCE, CNE, MCSE, MCT
Assistant Vice President
Linux Design and Engineering
Bank of America
(972) 997-9641

The opinions expressed in this message are mine alone and do not necessarily reflect the opinions of my employer, Bank of America.