Messages in this thread | | | Subject | Re: [PATCH v4 5/6] x86,sched: Add support for frequency invariance on ATOM | From | Giovanni Gherdovich <> | Date | Fri, 15 Nov 2019 11:34:21 +0100 |
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On Wed, 2019-11-13 at 08:50 -0800, Srinivas Pandruvada wrote: > On Wed, 2019-11-13 at 13:46 +0100, Giovanni Gherdovich wrote: > > The scheduler needs the ratio freq_curr/freq_max for frequency- > > invariant > > accounting. On all ATOM CPUs prior to Goldmont, set freq_max to the > > 1-core > > turbo ratio. > > > > We intended to perform tests validating that this patch doesn't > > regress in > > terms of energy efficiency, given that this is the primary concern on > > Atom > > processors. Alas, we found out that turbostat doesn't support reading > > RAPL > > interfaces on our test machine (Airmont), and we don't have external > > equipment > > to measure power consumption; all we have is the performance results > > of the > > benchmarks we ran. > > > > I can run some benchmarks on this. >
That'd be appreciated, thank you Srinivas.
Giovanni
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