Messages in this thread | | | Subject | Re: [PATCH v3 09/22] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task | From | Mike Galbraith <> | Date | Tue, 22 Jan 2013 10:52:18 +0100 |
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On Tue, 2013-01-22 at 15:50 +0800, Alex Shi wrote:
> Thanks for your suggestions and example, Mike! > I just can't understand the your last words here, Sorry. what the > detailed concern of you on 'both performance profiles with either > metric'? Could you like to give your preferred solutions?
Hm.. I'll try rephrasing. Any power saving gain will of necessity be paid for in latency currency. I don't have a solution other than make a button, let the user decide whether history influences fast path task placement or not. Any other decision maker will get it wrong.
-Mike
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