Messages in this thread | | | Date | Sun, 8 Nov 2009 14:39:08 -0800 | From | Arjan van de Ven <> | Subject | Re: [PATCH v2] cpuidle: Fix the menu governor to boost IO performance |
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On Sun, 8 Nov 2009 22:59:43 +0100 Corrado Zoccolo <czoccolo@gmail.com> wrote:
> Unfortunately, I have seen polling residency times > 1ms, so it must > not be so accurate.
hmm I wonder if the timer hardware in use has a much larger granularity than usecs... because that rounding up could cost us dearly.
wonder if we should do some form of "check for timer expiry" as part of the polling loop.. that'd cut latency way down as well ;)
-- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org
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