thr3ads.net - Fedora directory users - [Fedora-directory-users] too many fds open [Jul 2005]

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Craig Ayliffe

2005-Jul-27 12:10 UTC

[Fedora-directory-users] too many fds open

Hi,

Has anyone come across problem with directory server having too many
fds open, which then causes it to not receive any new connections?

Version: Fedora-Directory/7.1 B2005.146.2010
OS: Linux ds01 2.6.11-1.1369_FC4 #1 Thu Jun 2 22:55:56 EDT 2005 i686
i686 i386 GNU/Linux
>From the logs/error:
[28/Jul/2005:19:22:42 +1000] - Listening for new connections again
[28/Jul/2005:19:22:42 +1000] - Not listening for new connections - too
many fds open
[28/Jul/2005:19:22:42 +1000] - Listening for new connections again
[28/Jul/2005:19:22:42 +1000] - Not listening for new connections - too
many fds open
[28/Jul/2005:21:00:22 +1000] - Listening for new connections again


One thing I have noticed is a lot of tcp connections owned by the
ns-slapd process, that are suspended in the CLOSE_WAIT state.

# netstat -nap
...
tcp        0      0 ::ffff:10.10.246.31:389    
::ffff:10.10.245.12:54566   CLOSE_WAIT  17118/ns-slapd
tcp        0      0 ::ffff:10.10.246.31:389    
::ffff:10.10.245.12:54502   CLOSE_WAIT  17118/ns-slapd
tcp        0      0 ::ffff:10.10.246.31:389    
::ffff:10.10.245.12:54758   CLOSE_WAIT  17118/ns-slapd
tcp        0      0 ::ffff:10.10.246.31:389    
::ffff:10.10.245.12:54569   CLOSE_WAIT  17118/ns-slapd
tcp        0      0 ::ffff:10.10.246.31:389    
::ffff:10.10.245.12:54312   CLOSE_WAIT  17118/ns-slapd
tcp        0      0 ::ffff:10.10.246.31:389    
::ffff:10.10.245.12:54440   CLOSE_WAIT  17118/ns-slapd
tcp        0      0 ::ffff:10.10.246.31:389    
::ffff:10.10.245.12:54379   CLOSE_WAIT  17118/ns-slapd
tcp        0      0 ::ffff:10.10.246.31:389    
::ffff:10.10.245.12:54315   CLOSE_WAIT  17118/ns-slapd


Regards,

-- 
Craig Ayliffe

Alastair Neil

2005-Aug-03 04:39 UTC

head link

Re: [Fedora-directory-users] too many fds open

When I installed FDS the setup script was pretty specific about the need to 
ncrease the max number 
of open file descriptors.

This is what I setup:

fs.file-max 64000
in /etc/sysctl.conf

* - nofile 8192
in /etc/security/limits.conf

and in my init.d script:
ulimit -n 8192 


On 7/27/05, Craig Ayliffe <cayliffe@gmail.com>
wrote:> 
> Hi,
> 
> Has anyone come across problem with directory server having too many
> fds open, which then causes it to not receive any new connections?
> 
> Version: Fedora-Directory/7.1 B2005.146.2010
> OS: Linux ds01 2.6.11-1.1369_FC4 #1 Thu Jun 2 22:55:56 EDT 2005 i686
> i686 i386 GNU/Linux
> 
> >From the logs/error:
> 
> [28/Jul/2005:19:22:42 +1000] - Listening for new connections again
> [28/Jul/2005:19:22:42 +1000] - Not listening for new connections - too
> many fds open
> [28/Jul/2005:19:22:42 +1000] - Listening for new connections again
> [28/Jul/2005:19:22:42 +1000] - Not listening for new connections - too
> many fds open
> [28/Jul/2005:21:00:22 +1000] - Listening for new connections again
> 
> 
> One thing I have noticed is a lot of tcp connections owned by the
> ns-slapd process, that are suspended in the CLOSE_WAIT state.
> 
> # netstat -nap
> ...
> tcp 0 0 ::ffff:10.10.246.31:389 <http://10.10.246.31:389>
> ::ffff:10.10.245.12:54566 <http://10.10.245.12:54566> CLOSE_WAIT 
> 17118/ns-slapd
> tcp 0 0 ::ffff:10.10.246.31:389 <http://10.10.246.31:389>
> ::ffff:10.10.245.12:54502 <http://10.10.245.12:54502> CLOSE_WAIT 
> 17118/ns-slapd
> tcp 0 0 ::ffff:10.10.246.31:389 <http://10.10.246.31:389>
> ::ffff:10.10.245.12:54758 <http://10.10.245.12:54758> CLOSE_WAIT 
> 17118/ns-slapd
> tcp 0 0 ::ffff:10.10.246.31:389 <http://10.10.246.31:389>
> ::ffff:10.10.245.12:54569 <http://10.10.245.12:54569> CLOSE_WAIT 
> 17118/ns-slapd
> tcp 0 0 ::ffff:10.10.246.31:389 <http://10.10.246.31:389>
> ::ffff:10.10.245.12:54312 <http://10.10.245.12:54312> CLOSE_WAIT 
> 17118/ns-slapd
> tcp 0 0 ::ffff:10.10.246.31:389 <http://10.10.246.31:389>
> ::ffff:10.10.245.12:54440 <http://10.10.245.12:54440> CLOSE_WAIT 
> 17118/ns-slapd
> tcp 0 0 ::ffff:10.10.246.31:389 <http://10.10.246.31:389>
> ::ffff:10.10.245.12:54379 <http://10.10.245.12:54379> CLOSE_WAIT 
> 17118/ns-slapd
> tcp 0 0 ::ffff:10.10.246.31:389 <http://10.10.246.31:389>
> ::ffff:10.10.245.12:54315 <http://10.10.245.12:54315> CLOSE_WAIT 
> 17118/ns-slapd
> 
> 
> Regards,
> 
> --
> Craig Ayliffe
> 
> --
> Fedora-directory-users mailing list
> Fedora-directory-users@redhat.com
> https://www.redhat.com/mailman/listinfo/fedora-directory-users
>

David Boreham

2005-Aug-03 04:44 UTC

head link

Re: [Fedora-directory-users] too many fds open

>
>
>     Has anyone come across problem with directory server having too many
>     fds open, which then causes it to not receive any new connections?
>This typically indicates that you have a client application that is 
leaking connections.

The sockets on CLOSE_WAIT shouldn''t be a problem. It''s active
open
connections
that bung up your server.

If you really do need gazillions of active connections, then you''ll
need to
increase the file descriptor limit as detailed in the documentation.

Fedora directory users - Jul 2005 - too many fds open

[Fedora-directory-users] too many fds open

Re: [Fedora-directory-users] too many fds open

Re: [Fedora-directory-users] too many fds open