Re: [patch v5 06/15] sched: log the cpu utilization at rq

From: Alex Shi
Date: Sun Feb 24 2013 - 21:26:21 EST


On 02/20/2013 11:22 PM, Peter Zijlstra wrote:
> On Wed, 2013-02-20 at 22:33 +0800, Alex Shi wrote:
>>> You don't actually compute the rq utilization, you only compute the
>>> utilization as per the fair class, so if there's significant RT
>> activity
>>> it'll think the cpu is under-utilized, whihc I think will result in
>> the
>>> wrong thing.
>>
>> yes. A bit complicit to resolve this. Any suggestions on this, guys?
>
> Shouldn't be too hard seeing as we already track cpu utilization for !
> fair usage; see rq::rt_avg and scale_rt_power.
>

added them in periodic balancing, thanks!

--
Thanks Alex
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