On Mon, 2010-09-27 at 10:09 +0200, Attila Nagy wrote: > I've tried to set the above in Dovecot 2.0.3, but according to ktrace > (FreeBSD) it still fsync()s a lot (pop3 processes for example). > Is this switch useful at all? I did a quick test and didn't see any fsyncs. Can you find out what file it's fsyncing? doveconf -n output could also be useful.