[Dovecot] Ongoing performance issues with 2.0.x

Ralf Hildebrandt Ralf.Hildebrandt at charite.de
Sat Nov 6 21:54:24 EET 2010

* Stan Hoeppner <stan at hardwarefreak.com>:
> >> 2.6.32-23-generic-pae, from Ubuntu
> > 
> > I'm using this one because the bigmem kernels in Debian had some
> > problems (being: bigmem not working at all, it was not compiled in)
> And I'm guessing you're running a 32bit PAE kernel because VMWare ESX
> still doesn't officially support 64bit guests, correct?

No, it's supported, but I don'T want to change the whole system.

> Is this the only guest on this host or do you have others?

only guest

> If this is the only guest, you have 2 dual core dies in that Xeon CPU,
> 4 cores total.  I assume you've assigned 4 virtual CPUs to this Debian
> VM?

Yes, something like that

> You may want to run top in the hypervisor console itself (or an SSH
> session into the hypervisor) and watch the %CPU of the hypervisor's
> kernel threads.  That might tell us something as well.

Udo has to answer that, but from what he told me it was fully using
all cpus with 2.0, and now it's idling with 1.2

More details to follow (from him)

Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | http://www.charite.de

More information about the dovecot mailing list