Re: too many open files

--=-wIqK3CuYv3/ZVVltXe5p
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable

Hello,

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:
   --disable-tcpwrapper

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 =3D ldap.initialize("ldaps://ldap...")
  l.simple_bind_s(username, password)
  l.search_s('dc=3Dhaiti,...', ldap.SCOPE_SUBTREE, 'objectclass=3D*')
  n.append(l)

for x in range(0,1100):
  ldap_connection_func()
...

I see the number of open files of the slapd process rise to about 1080,
then all connections opened from the script are closed while slapd keeps
running.=20

We now will try to set the idletimeout parameter to some sensible value
>0. Hopefully, this will not lead to trouble with syncrepl.

Klemens

On Fri, 2010-04-23 at 16:59 +0100, Hugo Monteiro wrote:=20
> On 04/23/2010 11:55 AM, Buchan Milne wrote:
> > And 'grep files /proc/`pidof slapd`/limits' ?
> >
> >   =20
>=20
> Bingo.
>=20
> proxyldap1:~# grep files /proc/`pidof slapd`/limits
> Max open files            1024                 1024                 files
>=20
>=20
> Now this i don't undestand. Howcome is this value set to 1024 while i=20
> defined 8192 for nofile in /etc/security/limits ?
>=20
> So now i added ulimit -n 4096 to /etc/default/slapd and i restarted the=20
> server.
> I now get a proper value in /proc/`pidof slapd`/limits.
>=20
> Now it's wait and see, but i'm feeling confident.
>=20
> Thank you for your help.
>=20
> Hugo Monteiro.
>=20
--=20
Klemens Kittan
Systemadministrator

Uni-Potsdam, Inst. f. Informatik
August-Bebel-Str. 89
14482 Potsdam

Tel.    : +49-331-9773125
Fax.    : +49-331-9773122
eMail   : [email protected]

gpg --recv-keys --keyserver wwwkeys.de.pgp.net 6EA09333


--=-wIqK3CuYv3/ZVVltXe5p
Content-Type: application/pgp-signature; name=signature.asc
Content-Description: This is a digitally signed message part

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)

iEYEABECAAYFAkvareMACgkQZ1HXi26gkzOA8ACghydrztW6C/BWuAqjd7/IWK6y
6XwAoJnWd4wLRUsWsDz0E/cYkQGeVef8
=oPDa
-----END PGP SIGNATURE-----

--=-wIqK3CuYv3/ZVVltXe5p--