[Dovecot] Stale imap processes

Timo Sirainen tss at iki.fi
Fri Aug 4 00:15:10 EEST 2006

On Thu, 2006-08-03 at 15:58 -0500, Fran Fabrizio wrote:
> Ok, my head is swimming after catching up, but I think this is what I've 
> concluded...
> I am using Fedora Core 5 and dovecot RPMs.  The RPM that shipped with 
> FC5 was:
> dovecot-1.0-0.beta2.7
> after observing the stale imap processed I upgraded this to:
> 1.0-0.beta8.2.fc5
> Both of these are built with ioloop=poll.
> I am still seeing the stale processes with beta8.  Sounds like I need to 
> build from source using ioloop=kqueue to maybe clear up this issue.  Did 
> I interpret this correctly?  And should I stick with beta8 or move to rc2?

kqueue is BSD-specific feature, so you can't use it with Linux.

But I'd like to know what exactly does "stale processes" mean: Do you
use SSL and they're all SSL connections? Are they eating any CPU at all?
If you strace them, does it show if they're doing anything? How long are
they stuck, or don't they ever die?

How exactly do you know they are stale? Are you sure there aren't any
clients that still have active connections to it?

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