[Dovecot] load increase after upgrade to 2.0.8

Jose Celestino japc at co.sapo.pt
Thu Dec 16 01:38:35 EET 2010

On Qua, 2010-12-15 at 21:06 +0100, Cor Bosman wrote:
> > 
> > Correct. Only Linux is affected.
> > 
> > Anyway, Postfix's design has been like this forever, so no one would have ever noticed context switch counts increasing. But changing this might make them notice that context switches are dropping.
> > 
> Im a little surprised we havent seen more reports on dovecot as well. The impact was noticeable for us. 

We had very little change on the load, no impact on client performance
or anything to alarm us, after all it was a major upgrade.

Definitely there's wasn't a 20x increase on the load as on the cs's.

I guess that would depend on the CPUs, caches, etc.

Jose Celestino | http://japc.uncovering.org/files/japc-pgpkey.asc
"Assumption is the Mother of Screw-Up" -- Mr. John Elwood Hale

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