dovecot - Feb 2008 - 1.1rc1: Maximum number of mail processes exceeded

I'm getting "Maximum number of mail processes exceeded" messages
when
512 imap Processes are active.

Dovecot reports:

Warning: fd limit 1024 is lower than what Dovecot can use under full
load (more than 1712). Either grow the limit or change
login_max_processes_count and max_mail_processes settings

But in my /var/service/dovecot/run script I use:

#!/bin/sh
mkdir /var/core
chmod 1777 /var/core
echo /var/core/%p > /proc/sys/kernel/core_pattern
ulimit -n unlimited
ulimit -c unlimited
/usr/local/sbin/dovecot -F

So how can I raise the filedescriptor limit above 1024
(linux-2.6.24.2, Debian)?

-- 
Ralf Hildebrandt (Ralf.Hildebrandt at charite.de)          snickebo at
charite.de
Postfix - Einrichtung, Betrieb und Wartung       Tel. +49 (0)30-450 570-155
http://www.arschkrebs.de
StGB SS328 Absatz 2.3: Mit Freiheitsstrafe bis zu f?nf Jahren oder mit
Geldstrafe wird bestraft, wer eine nukleare Explosion verursacht

Before you start Dovecot type this in you shell:

ulimit -n 65000

I don't know how the use of the 'unlimited' word works: maybe this
is
only 1024?

Cheers,

Jan




-----Oorspronkelijk bericht-----
Van: dovecot-bounces+jan.vandenberg=isp.solcon.nl at dovecot.org
[mailto:dovecot-bounces+jan.vandenberg=isp.solcon.nl at dovecot.org] Namens
Ralf Hildebrandt
Verzonden: maandag 25 februari 2008 10:25
Aan: dovecot at dovecot.org
Onderwerp: [Dovecot] 1.1rc1: Maximum number of mail processes exceeded

I'm getting "Maximum number of mail processes exceeded" messages
when
512 imap Processes are active.

Dovecot reports:

Warning: fd limit 1024 is lower than what Dovecot can use under full
load (more than 1712). Either grow the limit or change
login_max_processes_count and max_mail_processes settings

But in my /var/service/dovecot/run script I use:

#!/bin/sh
mkdir /var/core
chmod 1777 /var/core
echo /var/core/%p > /proc/sys/kernel/core_pattern
ulimit -n unlimited
ulimit -c unlimited
/usr/local/sbin/dovecot -F

So how can I raise the filedescriptor limit above 1024
(linux-2.6.24.2, Debian)?

-- 
Ralf Hildebrandt (Ralf.Hildebrandt at charite.de)
snickebo at charite.de
Postfix - Einrichtung, Betrieb und Wartung       Tel. +49 (0)30-450
570-155
http://www.arschkrebs.de
StGB SS328 Absatz 2.3: Mit Freiheitsstrafe bis zu fnf Jahren oder mit
Geldstrafe wird bestraft, wer eine nukleare Explosion verursacht

Ralf Hildebrandt wrote:
> So how can I raise the filedescriptor limit above 1024
> (linux-2.6.24.2, Debian)?
In /etc/security/limits.conf, set

## domain	type	item		limit

*               soft    nofile          8192
*               hard    nofile          8192

And in /etc/profile do

ulimit -HSn 8192

Log out from shell and log back in and you have new settings in effect.

Tomi

On Feb 25, 2008, at 11:25 AM, Ralf Hildebrandt wrote:
> I'm getting "Maximum number of mail processes exceeded"
messages when
> 512 imap Processes are active.
Note that only max_mail_processes affects this.
> Warning: fd limit 1024 is lower than what Dovecot can use under full
> load (more than 1712). Either grow the limit or change
> login_max_processes_count and max_mail_processes settings
This is just a warning. If the fd limit is exceeded Dovecot just  
starts logging "out of file descriptors" errors.
> ulimit -n unlimited
Doesn't seem to work:

# ulimit -n unlimited
# ulimit -n
1024

# ulimit -n 10000
# ulimit -n
10000

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* Timo Sirainen <tss at iki.fi>:
> On Feb 25, 2008, at 11:25 AM, Ralf Hildebrandt wrote:
>
>> I'm getting "Maximum number of mail processes exceeded"
messages when
>> 512 imap Processes are active.
>
> Note that only max_mail_processes affects this.
I probably fucked this up. It works now. I tweaked the wrong settings :(

-- 
Ralf Hildebrandt (Ralf.Hildebrandt at charite.de)          snickebo at
charite.de
Postfix - Einrichtung, Betrieb und Wartung       Tel. +49 (0)30-450 570-155
http://www.arschkrebs.de
When you're having a really bad day and it seems like people are
trying to piss you off, remember it takes 42 muscles to frown and only
4 to extend your middle finger.