Ralf Hildebrandt put forth on 11/5/2010 4:23 AM: > 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.
Hi Ralf, What hardware platform? (AMD/Intel/SPARC/PPC, generation/freq) What OS platform? What compiler/version? What threading library? If IPC is the culprit, it may very well be a platform/compiler/system library issue and not a dovecot issue, given no one else seems to be suffering this problem. -- Stan
