| Subject | Re: [patch v4 11/18] sched: log the cpu utilization at rq | From | Peter Zijlstra <> | Date | Tue, 12 Feb 2013 11:39:52 +0100 |
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On Thu, 2013-01-24 at 11:06 +0800, Alex Shi wrote: > > The cpu's utilization is to measure how busy is the cpu. > util = cpu_rq(cpu)->avg.runnable_avg_sum > / cpu_rq(cpu)->avg.runnable_avg_period; > > Since the util is no more than 1, we use its percentage value in later > caculations. And set the the FULL_UTIL as 100%. > > In later power aware scheduling, we are sensitive for how busy of the > cpu, not how much weight of its load. As to power consuming, it is more > related with cpu busy time, not the load weight.
I think we can make that argument in general; that is irrespective of the actual policy. We simply never had anything better to go with.
So please clarify why you think this only applies to power aware scheduling.
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