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Re: RE: Too Many Open File Descriptors

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On Tue, 09 Aug 2011 23:07:05 -0400, Wilson Hernandez wrote:
That used to happen to us and had to write a script to start squid like this:

#!/bin/sh -e
#

echo "Starting squid..."

ulimit -HSn 65536
sleep 1
/usr/local/squid/sbin/squid

echo "Done......"



Pretty much the only solution.

ICAP raises the potential worst-case socket consumption per client request from 3 FD to 7. REQMOD also doubles the minimum resource consumption from 1 FD to 2.

Amos


On 8/9/2011 10:47 PM, Justin Lawler wrote:
Hi,

We have two instances of squid (3.0.15) running on a solaris box. Every so often (like many once every month) we get a load of below errors:

"2011/08/09 19:22:10| comm_open: socket failure: (24) Too many open files"

Sometimes it goes away of its own, sometimes squid crashes and restarts.

When it happens, generally happens on both instances of squid on the same box.

We have number open file descriptors set to 2048 - using squidclient mrg:info:

root@squid01# squidclient mgr:info | grep file
         Maximum number of file descriptors:   2048
         Largest file desc currently in use:   2041
         Number of file desc currently in use: 1903
         Available number of file descriptors:  138
         Reserved number of file descriptors:   100
         Store Disk files open:                  68

We're using squid as an ICAP client. Both squid instances point two different ICAP servers, so it's unlikely a problem with the ICAP server.

Is this a known issue? As its going on for a long time (over 40 minutes continuously), it doesn't seem like it's just the traffic spiking for a long period. Also, we're not seeing it on other boxes, which are load balanced.

Any pointers much appreciated.

Regards,
Justin
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