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Re: daemon: accept(6) failed errno=24 (Too many open files)
I had a similar problem and it happens every so often. The frequency
varies. Sometimes 2 or 3 times a day on other days it won't happen until 3
or 4 weeks later. I think for some reason there seems to be some upper
bound limit of file descriptors assigned to a process. Scouring the
Internet, I found an old post that someone had written about this. The
recommendation was to increase the number of file descriptors allowed to
the process. For our systems, (Solaris 2.7), I did it by editing
/etc/system. I added the following at the bottom of my /etc/system file
* increase the number of maximum file descriptors per process
set rlim_fd_max = 4096
and rebooted the machine using reboot -dl -- r
and so far the performance has been good (knock on wood). I've also written
a massive perl script that checks ldap every 5 minutes. It uses perldap
1.4.1 (http://www.perldap.org) and runs a query against ldap every 5
minutes. If it finds the entry then its well and good otherwise it tries
three more times. If it fails, it automatically restarts ldap.
hope that helps.
I do wish that someone more intelligible in how openldap works would
explain what's actually happening. For anyone who maybe reading this post,
if you have any clue could you post it online please?
here are some links that i read:
there were some others, I went to google and ran multiple searches for the
error message and read a few more news posts. also check squid. even if
you're not using it, i read an article once that mentioned this problem
with openldap and squid
At 09:13 AM 12/18/2001 -0600, Chris Garrigues wrote:
> From: "Chris Garrigues" <firstname.lastname@example.org>
> Date: Sat, 15 Dec 2001 16:55:28 -0600
> I've recently updated a number of things including LDAP and now my
> been freezing with this in the log fairly regularly:
> Dec 15 16:48:12 pecan slapd: daemon: accept(6) failed errno=24
(Too many open files)
> Dec 15 16:48:19 pecan last message repeated 2 times
> A restart of slapd clears the problem, but....
> The LDAP upgrade was from 2.0.14 (which I'd built myself) to 2.0.18-2
> RedHat RPM.
> When this first started happening, I set threads to 64 thinking that
> didn't have enough processes or something. Clearly I was on the wrong
> because that didn't help.
> It really did seem to start happening concurrently with the
update. Any ideas?
This happened again today and I got the output of "lsof|grep ldap" which
you'll find at:
I'd originally tried to include it in my mail, but mojordomo rejected it for
being too big.
I'd really appreciate it if someone could provide me with a clue.
Chris Garrigues http://www.DeepEddy.Com/~cwg/
716 Congress, Suite 200
Austin, TX 78701 +1 512 374 0500
My email address is an experiment in SPAM elimination. For an
explanation of what we're doing, see http://www.DeepEddy.Com/tms.html
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