Howard great thanks!!  32 or 64 bit OS?  Can you share the tuning you made to get the results?  <br><br><div class="gmail_quote">On Mon, Oct 12, 2009 at 4:26 AM, Howard Chu <span dir="ltr">&lt;<a href="mailto:hyc@symas.com">hyc@symas.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div class="h5">Brian Zuromski wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
HI,<br>
<br>
I&#39;m trying to scale out a openldap server deployment to serve around<br>
100K users.  I plan on having a master server and using syncrepl to<br>
create slaves that sit behind a load-balancer.  Is there a good rule of<br>
thumb to abide by when creating a scenario like this?  How many<br>
authentications/sec can a server typically handle?  I&#39;ve seen the<br>
benchmark comparisons<br>
(<a href="http://www.usenix.org/event/lisa07/htgr_files/chu.pdf" target="_blank">http://www.usenix.org/event/lisa07/htgr_files/chu.pdf</a>) that have been<br>
posted by Howard, but it doesn&#39;t say what the system specs were that the<br>
tests were performed on?  I will have pretty beefy systems to use (lots<br>
of RAM and CPU)...<br>
</blockquote>
<br></div></div>
The test showing ~35,000 auths/second on 100Mbit ethernet was done using a Celestica A8440 with 4 Opteron 875s. The test was network-limited, the CPUs were pretty idle. The machine had 16GB of RAM.<br><font color="#888888">
<br>
-- <br>
  -- Howard Chu<br>
  CTO, Symas Corp.           <a href="http://www.symas.com" target="_blank">http://www.symas.com</a><br>
  Director, Highland Sun     <a href="http://highlandsun.com/hyc/" target="_blank">http://highlandsun.com/hyc/</a><br>
  Chief Architect, OpenLDAP  <a href="http://www.openldap.org/project/" target="_blank">http://www.openldap.org/project/</a><br>
</font></blockquote></div><br>