hi Steffen, thanks for your reply. Below my replies:
Steffen Kaiser wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
v1.1.6 is pretty old, though. Right! update is my next step
What's hashdir? Maybe this is a performance killer? This run in the mail process and it is killed after the end of session, so I don't think this could cause performance degeneration.
Did you checked things like memory consumption and if there are processes which do consume lots of CPU, e.g. via "top" or similiar command. Maybe your server spends the time on the network?
We have monitoring memory, I/O, network consumption and everything seems to be fine.
This is a snapshot of a top :
%CPU %MEM
60.4 1.8 495:12.52 dovecot
4.2 0.6 0:27.53 dovecot-auth
1.0 0.0 2:04.48 pop3-login <- lots of
After reboot: 4.9 2.8 2:20.13 dovecot-auth
4.3 0.1 2:16.56 dovecot 1.0 0.0 0:00.03 pop3
This is a rough way to measure the consumption, but i think it still valid since we have a big difference. I will make some better measures of CPU usage and send here soon.
I was think if is there any kind of structure that dovecot keep in memory, it would have small growth rate and not make much difference to memory consumption, but makes dovecot process a lot more each day. Maybe a structure that needs upgrade after each access...
Thanks everyone! I really appreciate your help!
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