44d43d8d6e
I'm thinking of using this in perf with something like:
ratio(fill(filter("test=foo")), fill(filter("test=control")))
Does that make sense to you?
Not sure that this is really a good control bench on all bots,
but I propose we just run it a bit and find out if it needs work.
BUG=skia:
Review URL: https://codereview.chromium.org/1129823003
27 lines
861 B
C++
27 lines
861 B
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Benchmark.h"
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// This benchmark's runtime should be fairly constant for a given machine,
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// so it can be used as a baseline to control for thermal or other throttling.
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struct ControlBench : public Benchmark {
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const char* onGetName() override { return "control"; }
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bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
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void onDraw(const int loops, SkCanvas*) override {
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// Nothing terribly useful: force a memory read, a memory write, and some math.
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volatile uint32_t rand = 0;
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for (int i = 0; i < 1000*loops; i++) {
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rand *= 1664525;
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rand += 1013904223;
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}
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}
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};
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DEF_BENCH(return new ControlBench;)
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