I usually start seeing these errors about 5 minutes into the test. I
will attempt to increase the max file descriptors to the ulimit of the
server, which is 65535
Thanks
Cary Anderson, Systems Software Specialist
UNIX/Linux Services
Information Technology Services Branch
Technology Services & Support Division / Data Center Section
System Software & Storage Infrastructure
fCalPERS
Phone: (916) 795-2588
Fax: (916) 795-2424
-----Original Message-----
From: fedora-directory-users-bounces(a)redhat.com
[mailto:fedora-directory-users-bounces@redhat.com] On Behalf Of George
Holbert
Sent: Wednesday, May 23, 2007 10:49 AM
To: General discussion list for the Fedora Directory server project.
Subject: Re: [Fedora-directory-users] looking for some insight into
configuring FDS for an enterprise environment of 10k users
Running this script will generate "can't contact the LDAP
server"
errors.
Does this happen immediately, or does the script run for a while first?
When you start seeing this message, what shows up in the server's access
and error logs?
Max file descriptors: 4096
If you're running on machines dedicated to the directory service, you
can increase this quite a bit... in fact, this is probably the limit
you're hitting.
Anderson, Cary wrote:
I have been doing some stress tests on the FDS in order to try and
configure the server for an enterprise wide deployment. My goal is to
> recommend the number of slave/master servers and the appropriate
> configuration for an environment with 10k users.
>
> Starting with a default FDS installation I have modified the directory
> accordingly:
> 10k users id's
> the max cache size: 63Mb
> Lookthrough limit: 15000
Max file descriptors: 4096
> memory avail. for cache: 100Mb
> Created an index for uidnumber
>
> I have created a php script to stress test the server.
> The script has the following parameters:
>
> processes 500 # number of simultaneous connections
> binds 5 #number of times the script will loop
> query 50 # number of queries to make
> min sleep 1 # min time between queries
> max sleep 5 # max time between queries
> uid_number 50000 # search for this uidnumber
> server 10.27.1.104 #host ldap server
>
> Running this script will generate "can't contact the LDAP server"
> errors. My question is should I be looking at some other parameters
> to modify in order to have the server handle more simultaneous
> connections. 500 connections doesn't seem like an unreasonable number
of connections for an enterprise directory server, yet the server is
rolling over at what seems to be a pretty light load...
Any insights on how best to configure the server to handle a larger
number of connections would be greatly appreciated.
Thanks
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