On Thu, 2010-10-14 at 15:47 +0200, Ralf Hildebrandt wrote: > > > > Colleague returned from vacation today and gave some ideas. > > > > Today I turned off the "mail_log" and "notify" plugins and the load > > > > dropped considerably. Both plugins were used with default settings. > > Load as in I/O load or CPU load?.. If CPU, which process was eating it? > > CPU, specifically system (not user, not idle, not wait). > > Process: No special process was peaking. How is the logging > implemented? Each imap process is logging by itself?
dovecot-lda logs directly, with everything else it goes through "dovecot/log" process. Are you logging to syslog? Hmm. System CPU usage is about time spent in syscalls.. Is it doing too many tiny write()s or something? .. Maybe I should strace the processes and see if something's too slow there.