Fedora directory users - Mar 2007 - not enough file descriptors

I have a problem with running out of file descriptors.  I get this repeating
message periodically in the /opt/fedora-ds/slapd-<servername>/logs/errors
file:
[02/Mar/2007:13:25:45 -0500] - Not listening for new connections - too many fds
open
[02/Mar/2007:13:25:46 -0500] - Listening for new connections again
[02/Mar/2007:13:25:47 -0500] - Not listening for new connections - too many fds
open
[02/Mar/2007:13:25:47 -0500] - Listening for new connections again
...

When this happens, the users cannot log in for long periods and get angry. 
Imagine that.  I do have this in a multi-master configuration with a second
master, which is different hardware and does not show this error.

I read the tuning page
http://directory.fedora.redhat.com/wiki/Performance_Tuning#Linux, which
recommends updating the filedescriptors limit like so:
echo "64000" > /proc/sys/fs/file-max

However mine is already well above that:
# cat /proc/sys/fs/file-max
128456

How much higher should I be setting it?  I am running RHEL 4 update 4, single
Pentium III 1.4GHz processor, 1280MB of memory.

I don''t have any settinsg in sysctl.conf or /etc/security/limites for
soft/hard limits, how do I tell what the defaults on soft/hard limits are?

What is the value of the "nsslapd-maxdescriptors" attribute on
cn=config?

MJD Shop Account wrote:
> I have a problem with running out of file descriptors.  I get this
repeating message periodically in the
/opt/fedora-ds/slapd-<servername>/logs/errors file:
> [02/Mar/2007:13:25:45 -0500] - Not listening for new connections - too many
fds open
> [02/Mar/2007:13:25:46 -0500] - Listening for new connections again
> [02/Mar/2007:13:25:47 -0500] - Not listening for new connections - too many
fds open
> [02/Mar/2007:13:25:47 -0500] - Listening for new connections again
> ...
>
> When this happens, the users cannot log in for long periods and get angry. 
Imagine that.  I do have this in a multi-master configuration with a second
master, which is different hardware and does not show this error.
>
> I read the tuning page
http://directory.fedora.redhat.com/wiki/Performance_Tuning#Linux, which
recommends updating the filedescriptors limit like so:
> echo "64000" > /proc/sys/fs/file-max
>
> However mine is already well above that:
> # cat /proc/sys/fs/file-max
> 128456
>
> How much higher should I be setting it?  I am running RHEL 4 update 4,
single Pentium III 1.4GHz processor, 1280MB of memory.
>
> I don''t have any settinsg in sysctl.conf or /etc/security/limites
for soft/hard limits, how do I tell what the defaults on soft/hard limits are?
>
> --
> Fedora-directory-users mailing list
> Fedora-directory-users@redhat.com
> https://www.redhat.com/mailman/listinfo/fedora-directory-users
>
>

MJD Shop Account wrote:
> I have a problem with running out of file descriptors.  I get this
repeating message periodically in the
/opt/fedora-ds/slapd-<servername>/logs/errors file:
> [02/Mar/2007:13:25:45 -0500] - Not listening for new connections - too many
fds open
> [02/Mar/2007:13:25:46 -0500] - Listening for new connections again
> [02/Mar/2007:13:25:47 -0500] - Not listening for new connections - too many
fds open
> [02/Mar/2007:13:25:47 -0500] - Listening for new connections again
> ...
>
> When this happens, the users cannot log in for long periods and get angry. 
Imagine that.  I do have this in a multi-master configuration with a second
master, which is different hardware and does not show this error.
>
> I read the tuning page
http://directory.fedora.redhat.com/wiki/Performance_Tuning#Linux, which
recommends updating the filedescriptors limit like so:
> echo "64000" > /proc/sys/fs/file-max
>
> However mine is already well above that:
> # cat /proc/sys/fs/file-max
> 128456
>
> How much higher should I be setting it?  I am running RHEL 4 update 4,
single Pentium III 1.4GHz processor, 1280MB of memory.
>
> I don''t have any settinsg in sysctl.conf or /etc/security/limites
for soft/hard limits, how do I tell what the defaults on soft/hard limits are?
>   
I think you also have to edit /opt/fedora-ds/slapd-instance/start-slapd 
and put ''ulimit -n yourlimit'' somewhere near the top of the
file.
> --
> Fedora-directory-users mailing list
> Fedora-directory-users@redhat.com
> https://www.redhat.com/mailman/listinfo/fedora-directory-users
>