Re: [RFC PATCH 0/3] sched: Introduce Window Assisted Load Tracking

From: Vikram Mulukutla
Date: Fri Oct 28 2016 - 03:57:12 EST


On 2016-10-28 00:49, Peter Zijlstra wrote:
On Fri, Oct 28, 2016 at 12:10:39AM -0700, Vikram Mulukutla wrote:
This RFC patch has been tested on live X86 machines with the following sanity
and benchmark results (thanks to Juri Lelli, Dietmar Eggeman, Patrick Bellasi
for initial code reviews):

(Tested on an Intel i7 2nd generation CPU, 8GB RAM, Nvidia GTX950Ti graphics,
with the same frequency list as above. Running Ubuntu 16.04 on a v4.8.2
baseline. WALT window size was 10ms. Only deltas above 3% are considered
non-noise.Power measured with Intel RAPL counters)

Was this comparison done using the use_walt_metric sysctl knob?

Yes, it was. You will want to see numbers against a pure 4.8.2 without any
of the WALT code, correct?