Lots of 2009/09/27 00:49:21 [alert] 22383#0: accept() failed (24: Too many open files)

[Jason Kim]

Hello,

I'm using nginx to send static files and reverse proxing to an apache of the
same server for serving PHP files.

I'm getting a large amount of 500 internal server errors and
Lots of
2009/09/27 00:49:21 [alert] 22383#0: accept() failed (24: Too many open
files)
in my nginx error logs when visitors peak.

nginx.conf includes
user  apache apache;
worker_processes  12;
worker_connections  1024;
accessing stub_status says
Active connections: 625
server accepts handled requests
 233130990 233130990 400847438
Reading: 8 Writing: 10 Waiting: 607

right now but was about Active connections was about 1200 when getting the
errors

[root at firewall2 ~]# cat /proc/sys/fs/file-max
372684
[root at firewall2 ~]# ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 77824
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 200000
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 77824
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

I see no reason I should be bumping into the file open limits.

Anyway know why I'm getting the errors?
Thanks.
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