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Performance problems: caused by LDAP authentication?

From: Banzi Massimo <massimo.banzi_at_telecomitalia.it>
Date: 2007-06-28 16:50:04 CEST

Hello all

We have performance problems that seem to be due to the use of a
"Windows 2000 Active Directory" LDAP server.to authenticate users on svn

Here are the details:

We use svn version 1.4.2 (r22196) installed on a Solaris 9 Sun Fire
15000 partition, biprocessor and with 8 GB RAM

Apache 2.0.59 uses a mm_mod_auth_ldap module compiled with options:

--with-mem-cache --with-apxs --with-apache-ver=2 --with-ssl=yes .......


We installed an ALM tool POLARION that uses subversion as a repository
and apparently enabling authentication on LDAP causes a delay of about
70% more than without LDAP.

At the very beginning we thought the causes to be searched in POLARION,
but they said that the authentication mechanism in POLARION relies all
on svn authentication.

The intensive use that POLARION does of authentication mechanism result
in a delay which is unacceptable.

You see that we also cached authentication in mm_mod__auth_ldap but
apparently this is ininfluent.


My questions are:

did someone of you experience similar problems?

Do you thing that we have something misconfigured?

Moreover It seems that caching mechanism for auth_ldap module does not

Have you any Idea?


Thank You in advance




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Received on Thu Jun 28 16:50:27 2007

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