Re: [.32-rc3] scheduler: iwlagn consistently high in "waiting for CPU"

From: Frans Pop
Date: Thu Oct 08 2009 - 17:01:10 EST


On Thursday 08 October 2009, Mike Galbraith wrote:
> I still see very high latencies coming out of idle (last noted was >
> 300ms, NO_HZ) with this patch,
>
> Like this:
>
> Cause Maximum Percentage
> Scheduler: waiting for cpu 604.2 msec 49.0 %

I'm not seeing anything even remotely like that.

I've tried quieting the system down as much as possible, but that made
no difference. I do have NO_HZ set; will send my full config privately.

If you'd still like me to try your patch I will, but I'm not sure if
that has much value.

Cheers,
FJP
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