Comments on: Reduce Stack Limit for Multi-Thread Apps

By: Keith

Keith — Sun, 11 Sep 2011 23:17:52 +0000

I insert ulimit -s 128 into /etc/init.d/rc using Debian Squeeze.

By: Yomero

Yomero — Sun, 11 Sep 2011 22:04:55 +0000

I guess he talks about

/etc/init.d/rc

/etc/init.d/rc.local

But I am not sure. What I normally do, is to put that line “ulimit -s 128″ almost at the start of an init script. In the example of this post, can be /etc/init.d/pdnsd

By: collaborando

collaborando — Sun, 11 Sep 2011 21:16:26 +0000

In which RC file do I need to add limit?
or in /etc/security/limits.conf?

I have Centos 6 on OpenVz.

By: Keith

Keith — Mon, 18 Apr 2011 08:01:08 +0000

As well as changing the rc file I also add to /etc/security/limits.conf just before the end.

root            -       stack           256
*               -       stack           256

By: Joes Stuff » Archive » OpenVZ Memory Usage

Joes Stuff » Archive » OpenVZ Memory Usage — Mon, 28 Dec 2009 21:51:25 +0000

[...] screenshots from before, but after reading a post on LowEndBox about OpenVZ’s memory usage (http://www.lowendbox.com/blog/reduce-stack-limit-for-multi-thread-apps/), and then running the command he posted… My VPS’s memory usage seems to have dropped [...]

By: LowEndAdmin

LowEndAdmin — Sat, 05 Dec 2009 21:21:46 +0000

Well it is not entirely true. OpenVZ counts how much you allocated, but VSZ is a lot more than how much each process allocates. For example shared memory — that’s why for Apache it looks big, but not necessarily a lot are through memory allocation — much are in fact shared between processes, reported multiple times with ps, but only counted once on OpenVZ.

By: cling[y]

cling[y] — Sat, 05 Dec 2009 17:57:20 +0000

Thanks, I didn’t know OpenVZ monitored VSZ instead of RSS…since my VPS has 512MB I figured I’d go with apache, currently there are 6 Apache processes each taking about 4MB RSS, no big deal I thought, but VSZ they each have about 21MB, that’s about 125MB which is a big deal…

By: InsDel

InsDel — Sat, 05 Dec 2009 13:28:30 +0000

Thanks! My memory usage went from 101MB to 58MB :D