stress testing for ldap server

[Christine <ckuang@corp.talkcity.com>]

My servlet talks to a OpenLdap server in the backend, 
since my servlet needs to be able to handle thousands of hits 
at the same time, I did some stress testing on the OpenLdap server 
I'm using, I made a script to send out about 300 ldapsearch commands
at the same time, each ldapsearch command is searching through
about 2000 entries, the ldap server hangs before it could finish all
the ldapsearch commands.

The configuration for the ldap server is :
sizelimit       -1
timelimit       -1
cachesize       100000
dbcachesize     1000000
loglevel        0

Could someone give me some suggestions? Thanks.

-Christine