[Dovecot] Dovecot (IMAP) Hangs sometimes

[Steffen Kaiser]

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On Fri, 8 Jan 2010, Mario Gomide wrote:

> Then I commented the listen line, and things got better, but not good enough
> yet. Strange, uh?

I never tried that.

> Just for the record: My mail server is running super fast! The problem
> happens only at specific moments, twice a day, only.

specific moments? Which and what are the spesifics?

If I remember correctly, I made logs of the number of file descriptors of 
the "dovecot" process; each time the number _almost_ reached the max (say 
one or two  are not allocated yet), I saw the stalls _and_ when I manually 
logged off users (kill -15 imap-process) the number did not decreased. 
Well, not much anyway.
Sort of, it looked like a fd leak.

Since I have ulimit -n in my init.d, no such problem came up again. The 
previous ulimit was lower than the max Dovecot could handle.

Regards,

- -- 
Steffen Kaiser
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