Am 08.03.2011 21:38, schrieb Attila Nagy: > On 03/08/2011 06:51 PM, Charles Marcus wrote: >> On 2011-03-08 12:42 PM, Thierry de Montaudry wrote: >>> On 08 Mar 2011, at 19:37, Charles Marcus wrote: >>>> So... if the httpd process is the one consuming all of the CPU, doesn't >>>> it stand to reason that it might be something to do with one of your >>>> web >>>> apps, and not dovecot? >>> But then why was it fine with 1.1.13, which never had once this >>> problem in 2 years? or is 2.0.9 slower, or consuming more resources >>> to create the problem? >> You don't see how it might be possible that 2.0.x does something that >> 1.1.x didn't do that your webmail app might not like, without it being a >> dovecot bug? >> >> I'm not saying it is or it isn't, but I'd look there first - see if an >> update is available for your webmail app... since you were running an >> ancient version of dovecot, maybe you're also running an ancient version >> of it too? >> > I can see similar problems (subject: "Restarting dovecot-auth stops > authentication"), on a different OS, and nothing common in the webmail > area. > > I think this is clearly related to Dovecot. It handles load very badly > (well, it seems at least on common OS settings), doesn't just slow down, > but starts to refuse clients. > It seems to be obvious that the interprocess socket communication is > where it fails, so this is what needs to be investigated. > Sadly, doing this on a machine, which cries for a deep breath already is > not always easy.
you might upgrade to the latest 2.x code as it might possible your using more stuff then you had in older versions, after all there was a long performance thread on this list , look for it in archives -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria