On Fri, 21 Sep 2012, Craig White wrote:
as a server, OpenLDAP resources will use RAM based upon the number of entries but until you get upwards of 100,000 entries it shouldn't be of any concern and CPU usage should be extremely light save the brief moment of starting the daemon.
As an example, I run three OpenLDAP servers that are accessed through a load balancer from 400+ clients. Total CPU usage of all three servers by slapd averages a bit less than 2 hours per day.
Steve