[Dovecot] load increase after upgrade to 2.0.8

[Cor Bosman]

On Dec 8, 2010, at 5:11 PM, David Ford wrote:

> 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.

You're probably asking Ralf, but I might as well answer as well..

CONFIG_HZ_250=y
CONFIG_PREEMPT_NONE=y

Not using realtime, all cpu/smp options look fine.

CPU is usually pretty idle. Hovering around 90-99% idle.  But the load graphs clearly show a radical increase, where before things were pretty smooth, now they're erratic and much higher. 

Cor

ps: we use linux, not freebsd.