[Dovecot] proxy load-testing

[Vincent Fox]

I found the proxy performance page in the Wiki. It's interesting to see
such good performance for the proxy!

However, I was trying to duplicate the tests and am not clear how. Anyone
know what a typical test setup would look like?  I need to document/test
that I can setup a proxy able to handle 100-200 sessions per second which
the folks around here are skeptical of.

I emailed Tomi directly but got a vacation reply.  I tried a quick test of
my own with rabid and results seem questionable. Probably I am not using
the right options on the command-line. I used a single client to generate
the load and while I specified 20,000 per minute when I checked the maillog
on my IMAP server it was authentication more like 300 per minute.  I get a
number of "Re-auth failure" messages even with 3720 accounts. I think this
is due to the randomness being literal sometimes you hit again the same
account name while a first attempt of it is still connected.

Also not sure how Tomi generated those statistics, from the logs, from the
rabid output?  Since rabid doesn't do POP-mark numbers or anything I guess
you just ramp up the load until the proxy slows down and call that your
performance number?