[Dovecot] load increase after upgrade to 2.0.8

David Ford david at blue-labs.org
Wed Dec 8 18:11:05 EET 2010

what's your task switch HZ compiled at? CONFIG_HZ_1000?  you would 
probably be better at 300 or 250.  have you tried tickless?  is your 
kernel compiled for precisely your cpu type and smp/hyper options set 
correctly?  what about CONFIG_PREEMPT?  definitely don't use realtime, 
server is appropriate.


On 12/08/10 11:05, Ralf Hildebrandt wrote:
> Timo and I found excessive numbers of context switches, factor 20-30.
> But it's unclear why the IMAP process would do/cause this.

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