I have written up documentation on performance tuning OpenLDAP 2.4 that covers most other areas, for my work @ Zimbra, you can find it at:

http://wiki.zimbra.com/wiki/OpenLDAP_Performance_Tuning_6.0

It's based on you using Zimbra's tools to automatically update the configuration database, but you can easily tweak what it's talking about directly.

Hello Quanah,

I know this page. Its really very helpful! As talked, I tested openldap with shared memory and found, that this can accelerate the load of the LDAP-Database with slapadd a lot :-)

Thanks for your help.

Kindly regards,

Steeg