Messages in this thread | | | Date | Tue, 27 May 2008 20:57:06 +0530 | From | Vaidyanathan Srinivasan <> | Subject | Re: [RFC PATCH v1 0/3] Scaled statistics using APERF/MPERF in x86 |
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* Arjan van de Ven <arjan@infradead.org> [2008-05-27 07:15:32]:
> On Tue, 27 May 2008 18:49:26 +0530 > > At any time we will have both the traditional utilisation value > > relative to current CPU capacity, and scaled utilisation that is > > relative to maximum CPU capacity. > > > > this is where I raise a red flag *because the patch is not doing > that* !!
Your concern is valid. I assume you are objecting to the usefulness and interpretation of the scaled metric and not to the fact that both scaled and default non scaled metrics are independently available.
> sadly it gives a random metric which in some circumstances looks like > it does that, but in reality it is not doing that.
I agree and I am interested in designing a metric that is useful in most circumstances. I am open to suggestions to cover the case of power constraint and acceleration scenario.
Thanks, Vaidy
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