[Dovecot] imap process consuming 100% CPU (Dovecot 1.0.3)
Timo Sirainen
tss at iki.fi
Wed Nov 28 08:16:15 EET 2007
On Tue, 2007-11-27 at 11:38 -0700, Jackie Hunt wrote:
> > Thanks for the suggestion on the truss command, Timo:
> >
> > "truss -d -rO -w1"
>
> We have seen the imap process consuming 100% CPU again, and this time I
> was able to get a trace, but it's too long to post to the list. I've sent
> a copy to Timo. Let me know if anyone else would like a copy of it.
>
> This user is running Thunderbird on Solaris, and has at least two
> IMAP connections open continuously, one to a UofW server running on
> Solaris (I think), the other to Dovecot running on AIX. He has problems
> with the Dovecot connection hanging on him each morning. Thunderbird
> shows an hourglass, but he gets not indication of what is happening.
> He has to shut down Thunderbird to get it working again. It's a bit
> ironic/humorous, but his UofW connection is fine in Thunderbird, and
> that's how he notifies me his Dovecot imap is hung up.
Problem was that it was reading a 50MB mail in 12kB blocks, and Dovecot
wasn't handling that very well. Fixed:
http://hg.dovecot.org/dovecot-1.0/rev/0fba164c6ba6
http://hg.dovecot.org/dovecot-1.0/rev/edd95f9c6ba4
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