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Posted to users@httpd.apache.org by Fletcher Cocquyt <fc...@stanford.edu> on 2009/02/10 22:55:38 UTC
[users@httpd] Too many open files (24) - ulimit not obeyed?
Hi, my apache 2.0.52 is logging
Too many open files (24) and throwing HTTP error code 500
the apachectl script sets the max FD to 65536,
and lsof shows ~20,000 entries for httpd
(about 6000 txt - others are pipes to cronolog)
It seems like the ulimit is not obeyed, but I echoed the settings after the
apachectl runs at its at the hard limit.
god@web-04:~ 1:53pm 51 # lsof | wc -l
20558
god@web-04:~ 1:53pm 52 # lsof | egrep httpd | wc -l
15978
Does anyone have a hint how to make apache happy and use the 64k limit?
many thanks
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[users@httpd] Re: Too many open files (24) - ulimit not obeyed - plimit says yes
Posted by Fletcher Cocquyt <fc...@stanford.edu>.
Arnab Ganguly <aganguly01 <at> gmail.com> writes:
>
>
> I assume you tried "ulimit -H -n 65536" in the apachectl, also echo the
changed value within the script see the changes are getting affected for the
current process.Next is can you see the TCP states of the socket opened, it is
quite possible the sockets are opened but not closed correctly hence you upper
limit gets exhausted.
Yes, I just verified with plimit:
11400: /opt/httpd/bin/httpd -k start
resource current maximum
time(seconds) unlimited unlimited
file(blocks) unlimited unlimited
data(kbytes) unlimited unlimited
stack(kbytes) 8480 130336
coredump(blocks) unlimited unlimited
nofiles(descriptors) 65536 65536
vmemory(kbytes) unlimited unlimited
So my next move could be to somehow dump all descriptors for the process that
complains its exceeded 64K - but how to do that? (How to trigger a lsof at that
instant?)
Thanks
> Please try out the following and update.-A
> On Wed, Feb 11, 2009 at 3:25 AM, Fletcher Cocquyt <fcocquyt <at> stanford.edu>
wrote:Hi, my apache 2.0.52 is logging
> Too many open files (24) and throwing HTTP error code 500
> the apachectl script sets the max FD to 65536,
> and lsof shows ~20,000 entries for httpd
> (about 6000 txt - others are pipes to cronolog)
> It seems like the ulimit is not obeyed, but I echoed the settings after the
> apachectl runs at its at the hard limit.
> god <at> web-04:~ 1:53pm 51 # lsof | wc -l
> 20558
> god <at> web-04:~ 1:53pm 52 # lsof | egrep httpd | wc -l
> 15978
> Does anyone have a hint how to make apache happy and use the 64k limit?
> many thanks
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
> To unsubscribe, e-mail: users-unsubscribe <at> httpd.apache.org
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>
>
>
>
---------------------------------------------------------------------
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Re: [users@httpd] Too many open files (24) - ulimit not obeyed?
Posted by Arnab Ganguly <ag...@gmail.com>.
I assume you tried "ulimit -H -n 65536" in the apachectl, also echo the
changed value within the script see the changes are getting affected for the
current process.
Next is can you see the TCP states of the socket opened, it is quite
possible the sockets are opened but not closed correctly hence you upper
limit gets exhausted.
Please try out the following and update.
-A
On Wed, Feb 11, 2009 at 3:25 AM, Fletcher Cocquyt <fc...@stanford.edu>wrote:
> Hi, my apache 2.0.52 is logging
> Too many open files (24) and throwing HTTP error code 500
>
> the apachectl script sets the max FD to 65536,
> and lsof shows ~20,000 entries for httpd
> (about 6000 txt - others are pipes to cronolog)
>
> It seems like the ulimit is not obeyed, but I echoed the settings after the
> apachectl runs at its at the hard limit.
>
> god@web-04:~ 1:53pm 51 # lsof | wc -l
> 20558
> god@web-04:~ 1:53pm 52 # lsof | egrep httpd | wc -l
> 15978
>
> Does anyone have a hint how to make apache happy and use the 64k limit?
>
> many thanks
>
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>