Messages in this thread | | | Subject | Re: [PATCH 1/3] Added runqueue clock normalized with cpufreq | From | Peter Zijlstra <> | Date | Fri, 17 Dec 2010 16:16:47 +0100 |
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On Fri, 2010-12-17 at 16:06 +0100, Harald Gustafsson wrote: > 2010/12/17 Peter Zijlstra <peterz@infradead.org>: > > This is all assuming lowering the frequency is sensible to begin with in > > the first place... but that's all part of the CPUfreq governor, it needs > > to find a way to lower energy usage while conforming to the system > > constraints. > > Yes, I and you have already suggested the safe way to not lower it below > the total dl bandwidth. But for softer use cases it might be possible to > e.g. exclude threads with longer periods than cpufreq change periods in the > minimum frequency.
I was more hinting at the fact that CPUfreq is at best a controversial approach to power savings. I much prefer the whole race-to-idle approach, its much simpler.
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