> don't want to discourage you, but my slapd (2.4.11 on Debian Lenny)
> still has problems with more than 1024 files.
> I have
> -- ulimit -n 4096 in /etc/default/slapd
> -- checked the output of /proc/`pidof slapd`/limits
> -- downloaded the source package from Debian (version 2.4.11),
> did a grep for FD_SETSIZE and found that it is set to 4096
> -- built a new package from these sources with configure options:
> In a loop from a python script, I then connect, bind, search the ldap
> server and keep all the connections open, like so:
> def ldap_connection_func():
> global n
> l = ldap.initialize("ldaps://ldap...")
> l.simple_bind_s(username, password)
> l.search_s('dc=haiti,...', ldap.SCOPE_SUBTREE, 'objectclass=*')
> for x in range(0,1100):
What was the ulimit -n in the shell from which you ran this python script? If
you are using a single process to generate the load to the server, this
process obviously also needs to be able to open sufficient files.
Ah, I see.
I just have adjusted the ulimit size on the server side (to 4096). I
never thought about the client's side, where I started the script. Here,
the "ulimit -n" is 1024. Indeed, if the client tries to open less than
1024 files, everything is fine. Even if I start the script 3 times (each
in a separate shell) everything runs as expected. The clients and the
server do not have a problem, in detail, the server opened more than
1024 files at the same time successfully.
> I see the number of open files of the slapd process rise to
> then all connections opened from the script are closed while slapd keeps
It is funny that slapd opened more than 1024 files then, as it should either
have stopped at less than 1024 fd's (as it has other files open), or the script
should have reached 1100 connections, or your script is running with a file
> We now will try to set the idletimeout parameter to some sensible value
It looks like your slapd file descriptor limit is now taking effect, you just
need to test better, and/or interpret the results better ....
Yes, you are right.
I should set ulimit in the /etc/default/slapd and it will work.
Uni-Potsdam, Inst. f. Informatik
Tel. : +49-331-9773125
Fax. : +49-331-9773122
eMail : kittan(a)cs.uni-potsdam.de
gpg --recv-keys --keyserver wwwkeys.de.pgp.net