dovecot - Apr 2012 - 487 imap-login processes - is this ok

Hi,

recently I checked our mailserver for some more tuning and optimizing
and noticed, that currently I do have 487 imap-login processes and I'm
asking myself if that's o.k.

We do have about 1.000 user in total and not everybody is currently
logged in.

May be this is o.k. but if not, what might I check?

We run the dovecot package provided by redhat EL 5.8 dovecot-1.0.7-7.el5_7.1

	Thanks for any comment or suggestion.

	Regards . G?tz
-- 
G?tz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reinicke at filmakademie.de

Filmakademie Baden-W?rttemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016

Vorsitzender des Aufsichtsrats:
J?rgen Walter MdL
Staatssekret?r im Ministerium f?r Wissenschaft,
Forschung und Kunst Baden-W?rttemberg

Gesch?ftsf?hrer:
Prof. Thomas Schadt

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 5161 bytes
Desc: S/MIME Kryptografische Unterschrift
URL:
<http://dovecot.org/pipermail/dovecot/attachments/20120417/23005648/attachment-0004.bin>

Older versions of dovecot (all of v1) can under some circumstances
screwup and leave hung login processes, this more often than not occurs
if you have network issues, requiring a restart of dovecot to clear
them. Timo has apparently, IIRC, worked around this for v2.x and it
should not happen.


On Tue, 2012-04-17 at 16:21 +0200, G?tz Reinicke wrote:
> Hi,
> 
> recently I checked our mailserver for some more tuning and optimizing
> and noticed, that currently I do have 487 imap-login processes and I'm
> asking myself if that's o.k.
> 
> We do have about 1.000 user in total and not everybody is currently
> logged in.
> 
> May be this is o.k. but if not, what might I check?
> 
> We run the dovecot package provided by redhat EL 5.8
dovecot-1.0.7-7.el5_7.1
> 
> 	Thanks for any comment or suggestion.
> 
> 	Regards . G?tz

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 490 bytes
Desc: This is a digitally signed message part
URL:
<http://dovecot.org/pipermail/dovecot/attachments/20120418/eb2631f0/attachment-0004.bin>

On 17.4.2012, at 17.21, G?tz Reinicke wrote:
> recently I checked our mailserver for some more tuning and optimizing
> and noticed, that currently I do have 487 imap-login processes and I'm
> asking myself if that's o.k.
> 
> We do have about 1.000 user in total and not everybody is currently
> logged in.
> 
> May be this is o.k. but if not, what might I check?

Normal in "high-security mode": http://wiki.dovecot.org/LoginProcess

Most of those 487 processes are probably handling SSL traffic.