[Dovecot] Concurrent POP3 Sessions Issues

[Timo Sirainen]

Did you already solve this? If not, just mail the strace output to me
privately and I'll take a look at it.

On Fri, 2009-01-30 at 09:39 -0300, Mauricio López Riffo wrote:
> Timo,
> 
> 	What messages should be see?  I execute the commands and shows a lot
> of messages, i dont know what it means, i m not a programmer :)
> 
> 
> Thanks
> 
> ----
> 
> Mauricio López Riffo
> Red Hat Certified Engineer 
> 804006455319519
> Netline Telecomunicaciones Chile
> Los Conquistadores 2430, Providencia, Santiago.
> Codigo Postal: 7530041
> Fono: +562 6560600 
> Móvil: +569 90992366
> 
> > -----Mensaje original-----
> > De: Timo Sirainen [mailto:tss at iki.fi]
> > Enviado el: jueves, 29 de enero de 2009 20:46
> > Para: mauricio.lopez at netline.net; Dovecot Mailing List
> > Asunto: Re: [Dovecot] Concurrent POP3 Sessions Issues
> > 
> > On Jan 29, 2009, at 1:17 PM, Mauricio López Riffo wrote:
> > 
> > > 	I have problems with dovecot + ldap + nfs, we could't have more than
> > > 20 concurrent sessions of pop3, when user 21 comes, the auth process
> > > takes more than 1 sec and is incresing (while most users arrives, more
> > > delay in
> > > autenticacion exists) and my customers complaint about the service.
> > > We need
> > > support about 200 concurrents pop3 users, here is my details
> > 
> > Someone else was recently complaining about the same thing. Or was it you?
> Anyway,
> > dovecot-auth doesn't know how many users are logged in so if the problem
> really is 21
> > *concurrent users* instead of n logins/ second, I find it highly unlikely
> that the problem is
> > with authentication.
> > 
> > My guess is that this has something to do with NFS. Perhaps start Dovecot
> with strace -tt -f
> > dovecot and then when it's slowing down see what syscall it says is
> blocking.
> 
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