[Dovecot] load increase after upgrade to 2.0.8
Ralf.Hildebrandt at charite.de
Wed Dec 8 18:05:19 EET 2010
* David Ford <david at blue-labs.org>:
> gprof for detail, and even with simple strace timing. i.e. strace
> -c. if load is going up significantly, there should be one or more
> functions significantly fatter than the rest. you can pick either to
> run it on the whole group, or just attach to certain processes.
> (master, imap, lda, etc)
Timo and I found excessive numbers of context switches, factor 20-30.
But it's unclear why the IMAP process would do/cause this.
> when you run 'ps aux|grep dovecot', what seems to collect the most cpu time?
> On 12/08/10 10:54, Ralf Hildebrandt wrote:
> >* David Ford<david at blue-labs.org>:
> >>Ralf, did you do the profiling yet?
> >With gprof or what exactly is on your mind?
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