[Dovecot] dovecot performance

[Jose Celestino]

Words by Giorgenes Gelatti [Thu, Aug 14, 2008 at 04:46:04PM -0300]:
> Woa!!
> 
> Do you have statistics of access/min for pop3?
> 

No, but I 'greped' 2300 logins/minute peak for a given day for *IMAP*.

> Indeed it could be premature since I didn't measure any real
> bottleneck. Just something that got my attention.
> 
> []'s
> giorgenes
> 
> 2008/8/14 Jose Celestino <japc at co.sapo.pt>:
> > Words by Giorgenes Gelatti [Thu, Aug 14, 2008 at 03:38:50PM -0300]:
> >> Hello All,
> >>
> >> I've been studying dovecot for replacing my company's current system
> >> and I got a little worried about an aspect of the dovecot's design.
> >> I was surprised that dovecot doesn't use prefork for its mail
> >> processes, forking a new processes for each new client connection.
> >>
> >> Talking in the #dovecot channel I was gave a scenario of a system
> >> supporting ~40k users with 4 servers just fine.
> >> I wonder how well dovecot would scale if we increase this number of
> >> users by some order of magnitude like, say, 4M users.
> >>
> >
> > Well, we have 8 servers for that amount of users.
> >
> >> It is well known that preforking is a good pratice if you want to
> >> achieve a higher performance.
> >
> > Some say it's premature optimization.
> >
> >> When I was asked about it I readily answered: "of course it does". For
> >> my surprise later, i doesn't.
> >>
> >> Do you have any plans to support preforking in the near future?
> >>

-- 
Jose Celestino | http://japc.uncovering.org/files/japc-pgpkey.asc
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