Am 05.11.2010 10:58, schrieb Ralf Hildebrandt: > * Ralf Hildebrandt <ralf.hildebra...@charite.de>: >> Due to the ongoing performance issues with 2.0.x I switched back to >> 1.2.15 yesterday evening, with no changes to the machine or my users. >> >> (I migrated from 1.2.15 to 2.0.x by converting the existing config) >> >> Today, we have MUCH LESS load, with the same number of logins/min. >> >> I cannot say what exactly causes this immense increase in load, but one >> observation is that the time spent in system() has now dropped (user and >> iowait have stayed contant) to a third of the values I was seeing with >> 2.0.x. >> >> This evening I'll post some graphs showing two comparable 24 hour >> ranges. > > I uploaded a preliminary screenshot with comments: > http://www.arschkrebs.de/bugs/dovecot.png > > During the night we're using clamdscan to scan mailboxes for viruses, > this results in the big block of system & user from 0:00 until about > 08:00 >
Hi Ralph, high cpu load is common with clamscan -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria