[Fedora-directory-users] Load Testing question

[Patrick Morris]

On Wed, 06 Jun 2007, Anderson, Cary wrote:

> I am still playing around with load/stress testing my FDS install.  I am using slamd to run the tests, and I am running the basic load, and the basic search tests against my test boxes,  The slamd client and the FDS server are on identical hardware running RHEL4 with 2G memory, and 2 Intel Xeon 3.6GHz processors.  The issue I am seeing is that I am getting "cannot connect to the ldap server" errors once I push the "threads per client" past 2400.  My question is am I hitting a limit on the OS (max tcp connections)? Or a FDS limit?  My assumption was that given appropriate hardware, and proper configuration, I could expect FDS to handle more than 2400 concurrent connections.  Any insights as to what I might be missing would be greatly appreciated.

Log entries from your server should give you some insight into why
connections are being refused.

There's a good chance you haven't allocated enough file handles, but
that's a guess.