This reverts commit 43307c09b9.
Reason for revert: Fixed this time. Echo 1 > already online cpu
returns exit code 1, which makes python over-react.
Original change's description:
> Revert "Disable extra CPUs during Nanobench"
>
> This reverts commit 32af335e7a.
>
> Reason for revert: many unhappy android bots
>
> Original change's description:
> > Disable extra CPUs during Nanobench
> >
> > The previous experiment revealed that nanobench can
> > run on any of the online CPUs, so rather than put
> > the ones we don't need/want into powersave mode, just
> > disable them.
> >
> > Maybe in the future we can run CPU tests on the big
> > or LITTLE cpus to get perf data on higher end or
> > lower end cpus, but only if we get very stable
> > results from this.
> >
> > Bug: skia:7378
> > Change-Id: I057513a691093e7f73c0f5790e17fab1a5ec0bc4
> > Reviewed-on: https://skia-review.googlesource.com/84820
> > Reviewed-by: Kevin Lubick <kjlubick@google.com>
> > Commit-Queue: Kevin Lubick <kjlubick@google.com>
>
> TBR=borenet@google.com,mtklein@google.com,kjlubick@google.com
>
> Change-Id: I23c37a6bde631e95f0b4ae7277ec8fcf325a00e9
> Bug: skia:7378
> Reviewed-on: https://skia-review.googlesource.com/84921
> Reviewed-by: Mike Klein <mtklein@google.com>
> Commit-Queue: Mike Klein <mtklein@google.com>
No-Tree-Checks: true
Change-Id: Ie7f0a3dc6ba55c124c796aba16a0f0497f285f3a
Bug: skia:7378
Reviewed-on: https://skia-review.googlesource.com/84865
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
This reverts commit 32af335e7a.
Reason for revert: many unhappy android bots
Original change's description:
> Disable extra CPUs during Nanobench
>
> The previous experiment revealed that nanobench can
> run on any of the online CPUs, so rather than put
> the ones we don't need/want into powersave mode, just
> disable them.
>
> Maybe in the future we can run CPU tests on the big
> or LITTLE cpus to get perf data on higher end or
> lower end cpus, but only if we get very stable
> results from this.
>
> Bug: skia:7378
> notry=true
> notreechecks=true
> Change-Id: I057513a691093e7f73c0f5790e17fab1a5ec0bc4
> Reviewed-on: https://skia-review.googlesource.com/84820
> Reviewed-by: Kevin Lubick <kjlubick@google.com>
> Commit-Queue: Kevin Lubick <kjlubick@google.com>
TBR=borenet@google.com,mtklein@google.com,kjlubick@google.com
Change-Id: I23c37a6bde631e95f0b4ae7277ec8fcf325a00e9
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:7378
Reviewed-on: https://skia-review.googlesource.com/84921
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
The previous experiment revealed that nanobench can
run on any of the online CPUs, so rather than put
the ones we don't need/want into powersave mode, just
disable them.
Maybe in the future we can run CPU tests on the big
or LITTLE cpus to get perf data on higher end or
lower end cpus, but only if we get very stable
results from this.
Bug: skia:7378
notry=true
notreechecks=true
Change-Id: I057513a691093e7f73c0f5790e17fab1a5ec0bc4
Reviewed-on: https://skia-review.googlesource.com/84820
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Perf was nice and flat after https://skia-review.googlesource.com/c/skia/+/83240
but there was a 4-5x slowdown on the benchmarks themselves,
indicating that perhaps we were running nanobench on the
LITTLE cores (now on powersave) instead of the big cores we
thought (which were recently scaled down).
This experiment will show us FOR CERTAIN that we are
running on core 0 or 1 which is at .6 max frequency.
We expect to see a speedup from the previous results.
This is leading to turning of CPUs we don't need
to make sure nanobench is running on the ones we expect.
Bug: skia:
NOTRY=true
Change-Id: Ida65181e4d90e778e65e3f22d761288b9ade64f6
Reviewed-on: https://skia-review.googlesource.com/84201
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
They seem to be their own special cases for what
governors they support.
Bug: skia:
NOTRY=true
Change-Id: I7bb220e1d3ba6851c17c7e6ef327aab24ffdba42
Reviewed-on: https://skia-review.googlesource.com/83900
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
This scaling logic correctly accounts for some devices
which have multiple CPUs. Previously, we were scaling
the smaller of these CPUs, which likely had a negative
impact on nanobench, given nanobench was single threaded
and the CPUs weren't allowed to idle much (because we
set the CPU).
This CL sets those additional CPUs to powersave when we run
nanobench and then correctly scales down the beefier
CPU we want to run nanobench on.
For DM, we just run it in ondemand mode, which will
hopefully be "as fast as possible", but allow the CPU
governor to scale down if overheating becomes a problem.
Bug: skia:7378
notry=TRUE
Change-Id: I45ca5d9fb32182233d1b2d094842c879f2b84da4
Reviewed-on: https://skia-review.googlesource.com/83240
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Add logic to run on Nexus 5xs in Golo.
Bug:788839
Change-Id: I12290d11a0b1b0f012ada216da3e5b2599979c5e
Reviewed-on: https://skia-review.googlesource.com/81861
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
The previous list was created from scaling_min_freq and scaling_max_freq
instead of cpuinfo_min_freq and cpuinfo_max_freq which are the actual mins
and maxes, not the current (transient) settings of the governor.
Before:
Test-Release: 61 minutes
Perf-Debug: 41 minutes
After:
Test-Release: 32 minutes
Perf-Debug: 16 minutes
NOTRY=true
Bug: skia:
Change-Id: I9b431e92d2abcecb4fe643389daddc912a1399e1
Reviewed-on: https://skia-review.googlesource.com/78141
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Some bots, especially the Nexus 7s, seemed to occasionally
fail when setting the CPU frequency. I was unable to
repro this behavior, so this is a shotgun approach.
We add a 5 second delay between setting and checking,
checking frequency using scaling_cur_freq instead of
scaling_setspeed, set the min_freq as well as max_freq,
and retry up to 3 times if setting cpu frequency fails.
NOTRY=true
Bug: skia:
Change-Id: Id4d85d8d509c9dba8e3a0e06b5992f5adadf36d2
Reviewed-on: https://skia-review.googlesource.com/78140
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
