strange 'too many open files' errors with nginx 0.6.32

Arash Ferdowsi arash at
Mon Nov 17 13:50:26 MSK 2008

oh, and one more thing, restarting nginx seems to fix everything (until the
error pops up again a day or so later :-)

On Mon, Nov 17, 2008 at 2:48 AM, Arash Ferdowsi <arash at>wrote:

> hi,i'm seeing a strange 'too many open files' error with nginx (which I'm
> sure many of you have seen before):
> 2008/11/17 02:15:02 [alert] 21748#0: accept() failed (24: Too many open
> files) while accepting new connection on
> strangely enough, I have the following line in /etc/security/limits:
> * hard nofile 524288
> and ulimit -n returns the same number. I have 2 workers set to a max
> of 262144 connections. upon receiving that error (and after
> past occurrences) I've run lsof and gotten < 10k sockets. additionally, I
> have a nearly identically configured machine (running twisted) where each
> process is handling ~15k connections. so I'm a loss as to what's going on
> here (and suspect some subtle bug in nginx or in my server configuration.
> any help would be greatly appreciated!
> --
> Arash Ferdowsi
> CTO, Dropbox
> 913.707.5875 (m)

Arash Ferdowsi
CTO, Dropbox
913.707.5875 (m)
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