[Dovecot] Concurrent POP3 Sessions Issues

[Mauricio López Riffo]

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.