[Dovecot] Too many imap connections in state "idling"

[Urban Loesch]

Can you see other strange symptoms on that machine?
For example very high system load but not high I/O?

We had similar issues with imap processes that are hanging in "D" state some months ago.
The problem was, or is a bug in the inotify mechanism in the linux kernel. Not shure if the bug has just been
fixed.

For details see here:
http://www.dovecot.org/list/dovecot/2012-May/065884.html

and solution here:
http://www.dovecot.org/list/dovecot/2012-June/066314.html

Regards
Urban



On 18.12.2012 17:48, 3.listas at adminlinux.com.br wrote:
> Thanks Steffen Kaiser ! I think not. The server is currently always 60% of imap processes in state "idling".
>
> IDLE processes are like this:
> root at server:/root# ps aux |grep imap
> dovemail    617  0.0  0.0  23136  2260 ?        S    Dec15   0:01 dovecot/imap [Username1 IP1  IDLE]
> dovemail    677  0.0  0.0  23104  2172 ?        S    Dec15   0:01 dovecot/imap [Username2 IP2 IDLE]
> ...
>
> My "idling" processes are seen as follows:
> root at server:~#  ps aux |grep imap |grep idling
> dovemail   1141  0.0  0.0  16836  2148 ?        D    Dec15   0:01 dovecot/imap [idling]
> dovemail   3375  0.0  0.0  16828  2120 ?        D    15:48   0:00 dovecot/imap [idling]
> dovemail   4833  0.0  0.0  16828  2212 ?        D    15:49   0:00 dovecot/imap [idling]
> ...
>
> Thanks!
> --
> Thiago Henrique
> www.adminlinux.com.br
>
> On 14-12-2012 06:40, Steffen Kaiser wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> On Thu, 13 Dec 2012, 3.listas at adminlinux.com.br wrote:
>>
>>> Is it normal this large amount of connections in state 'idling' ?
>>
>> If they actually using the "IDLE" command to wait for PUSH mails on much more folders than on the other server?
>>
>> Regards,
>>
>> - -- Steffen Kaiser
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v1.4.11 (GNU/Linux)
>>
>> iQEVAwUBUMrmFmoxLS8a3A9mAQKmjgf/RbVzZet2+PUDQpMkrquB8zURR+WaBpxa
>> OCnNahjCV3kkuyLSciU8cq54vQhfPEXoyeqoQric/QmMOIZwhaVclLGpnSGa6lGR
>> fjk6x1PgcUDpqncktTJ+aUuJYTiigQbZ1wLWUfCHNZMXx5smReUMV+IdYV/0UH2a
>> NCnQMX7+FfUWOfZdU6QbomgTXAEgjUD+YRo0JqQ6ja/ELWfbUrYAXwhGXAXyskJT
>> 0eygy3FSEBJQMaIO+o5Dco7AbaCGs19xRagZWGZV5/1j17dHqOHwLdp8MnO4wCI8
>> 4IPzuTUbAY0gnCEJLcSYmQG1FzNi5SjPfMV/dypB7wcPdIx4rIzsww==
>> =OQSw
>> -----END PGP SIGNATURE-----
>
>