We're looking at replacing our mysql auth and userdb, with a set of Red Hat Directory servers, and I see dovecot supports either authentication binds, or "password lookups":
http://wiki.dovecot.org/AuthDatabase/LDAPI'm curious if anybody can give any insight as to what kind of performance to expect from authentication binds ? How many POP3s/second should we expect from it ?
Our directory servers will be 2 blades with 4 cores of 2GHz each, and we expect to keep the full directory in memory on both servers.
-jf
On Wed, 2009-01-14 at 23:36 +0100, Jan-Frode Myklebust wrote:
I'm curious if anybody can give any insight as to what kind of performance to expect from authentication binds ? How many POP3s/second should we expect from it ?
Try yourself with imaptest (http://imapwiki.org/ImapTest):
imaptest - select=0 clients=<try different values>
It'll authenticate the same user, but as long as you don't enable auth cache it'll still do the LDAP lookups and you can get a pretty good idea of the performance.
My guess is that the performance bottleneck won't be authentication binds, as long as the latency between Dovecot and LDAP server is small.
On Wed, Jan 14, 2009 at 05:43:51PM -0500, Timo Sirainen wrote:
Try yourself with imaptest (http://imapwiki.org/ImapTest):
imaptest - select=0 clients=<try different values>
Cool, thanks!
My guess is that the performance bottleneck won't be authentication binds, as long as the latency between Dovecot and LDAP server is small.
OK, the servers are pretty close network-wise. Will try to run some tests, and post some numbers when I have them.
-jf
participants (2)
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Jan-Frode Myklebust
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Timo Sirainen