| <!DOCTYPE html> |
| <!-- |
| Copyright 2016 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <link rel="import" href="/tracing/base/statistics.html"> |
| <link rel="import" href="/tracing/metrics/metric_registry.html"> |
| <link rel="import" href="/tracing/metrics/system_health/clock_sync_latency_metric.html"> |
| <link rel="import" href="/tracing/value/histogram.html"> |
| |
| <script> |
| 'use strict'; |
| |
| tr.exportTo('tr.metrics.sh', function() { |
| |
| var IDEAL_FRAME_RATE_FPS = 60; |
| var IDEAL_FRAME_DURATION_MS = tr.b.convertUnit(1.0 / IDEAL_FRAME_RATE_FPS, |
| tr.b.UnitScale.Metric.NONE, tr.b.UnitScale.Metric.MILLI); |
| |
| function energyConsumedPerFrame(valueList, model) { |
| var frameEnergyConsumedInJ = new tr.v.Histogram('energy_consumed_per_frame', |
| tr.b.Unit.byName.energyInJoules_smallerIsBetter, |
| tr.v.HistogramBinBoundaries.createLinear(0, 0.5, 20)); |
| frameEnergyConsumedInJ.description = |
| 'Energy consumption per frame in joules'; |
| |
| var frameStartTs = parseFloat(model.device.powerSeries.samples[0].start); |
| while (model.device.powerSeries.getSamplesWithinRange( |
| frameStartTs, frameStartTs + IDEAL_FRAME_DURATION_MS).length) { |
| var currentFrameEnergy = model.device.powerSeries.getEnergyConsumedInJ( |
| frameStartTs, frameStartTs + IDEAL_FRAME_DURATION_MS); |
| frameStartTs += IDEAL_FRAME_DURATION_MS; |
| frameEnergyConsumedInJ.addSample(currentFrameEnergy); |
| } |
| |
| valueList.addHistogram(frameEnergyConsumedInJ); |
| } |
| |
| function powerMetric(valueList, model) { |
| if (!model.device.powerSeries) |
| return; |
| |
| energyConsumedPerFrame(valueList, model); |
| } |
| |
| tr.metrics.MetricRegistry.register(powerMetric); |
| |
| return { |
| powerMetric: powerMetric |
| }; |
| }); |
| </script> |
