[colug-432] ulimit

Mark Aufdencamp mark at aufdencamp.com
Fri Dec 2 15:57:10 EST 2011

A helpful link:


> -------- Original Message --------
> Subject: [colug-432] ulimit
> From: Rick Hornsby <richardjhornsby at gmail.com>
> Date: Fri, December 02, 2011 11:52 am
> To: Central OH Linux User Group - 432xx <colug-432 at colug.net>
> We're running into some issues hitting FD limits, mostly running Websphere on RH5.5.
> We've been able to raise the limit by adding entries to /etc/security/limits.conf for the user running Websphere, but still don't fully understand how the kernel counts how many FDs a user has open (websphere is the only thing running java but lsof -c /java/ | wc -l sometimes shows a value over the limit w/ no obv issues), if that is the right place to set it, and where the default of 1024 comes from?
> Further confusing it for me at least is that ulimit is a bash builtin command, but the limits are enforced by the kernel?
> Any insight would be helpful.
> thanks!
> -rj
> Sent from my iPhone
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