[Dovecot] Dovecot stops to work - anvil problem

[FABIO FERRARI]

Thank you very much for your help, I cross mi fingers but it seems that
this was the problem.

Fabio Ferrari


> On 26.10.2012, at 13.24, FABIO FERRARI wrote:
>
>> Hi all,
>>
>> we have a problem about anvil, it seems that when we have a high load
>> the
>> dovecot stops to work. Sometimes it is sufficient to make a dovecot
>> reload, but sometimes we have to restart it.
>>
>> Oct 26 11:13:55 anvil: Error: net_accept() failed: Too many open files
>
> This is the problem.
>
>> And these are the limit settings in the OS:
>> *               soft    nofile          131072
>> *               hard    nofile          131072
>>
>> Have someone had the same problem?
>
> The OS limits are ok. But you need to make sure that the dovecot processes
> have enough fds in ulimit. You can check the limits with:
>
> cat /proc/<pid of anvil process>/limits
>
> The "Max open files" soft limit is what you're most likely hitting. Use
> "ulimit -n 10000" or something before running dovecot binary. And make
> sure that it changes the limit in the proc. Many init scripts change the
> ulimit internally.
>
>