On the SunFire x4100 servers I used to have, I could easily obtain some 23,000+ reads/second with OpenLDAP 2.3 on a single server.
But that's reads only, right? Do you have any sense for what kind of performance you might see in a balanced 50/50 or even a write-heavy environment?
--Quanah
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Quanah Gibson-Mount Principal Software Engineer Zimbra, Inc -------------------- Zimbra :: the leader in open source messaging and collaboration