Symas (big commercial backers and developers for OpenLDAP) posted benchmark numbers on their site comparing OpenLDAP with the latest versions of FDS (Fedora DS), OpenDS (the Java based Directory Server from Sun which is still in the early stages of development) and ApacheDS (which does not seem to be able to handle real world loads).
It seems that OpenLDAP outperforms the rest many times over, with FDS having trouble keeping 1 million entries in 8MB of RAM. Good news for OpenLDAP, bad news for FDS (which needs much more work, especially for large scale cases) and it makes me wonder how Sun ONE would perform (since it shares the same code base with FDS).
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April 10, 2007 at 2:59 pm
Marty Heyman
Thanks for the post! We find it amusing that we’re “big commercial backers and developers” … five guys and a dog. Great entry. Thanks again.
April 10, 2007 at 11:46 pm
Howard Chu
The SunOne license precludes us from publishing our own benchmark data for their server. You can draw your own conclusions from this, but here are some things I can say:
Repeating what we already know: OpenLDAP is the fastest, most scalable directory server in the world, and *nothing else comes anywhere close*. That’s not marketing fluff, that’s just a simple fact.
Anybody that puts such a restriction in their license clearly has something to hide.
And yes, SunOne has a great deal in common with FDS. It makes their license restriction somewhat irrelevant, in the end.