| <!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/iteration_helpers.html"> |
| <link rel="import" href="/tracing/base/range.html"> |
| <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/loading_metric.html"> |
| <link rel="import" href="/tracing/value/numeric.html"> |
| |
| <script> |
| 'use strict'; |
| |
| tr.exportTo('tr.metrics.sh', function() { |
| |
| /* |
| * Call the functions in loading_metric.html to get the TTI intervals. |
| * "TTI interval" here means the interval between the start of the |
| * LoadExpectation (i.e. navigation start) and time to interactive. |
| * A trace can have multiple TTI intervals in the case that there are |
| * multiple page loads (e.g. a browsing story where the user switches |
| * between multiple pages) |
| */ |
| |
| function getNavigationTTIIntervals(model) { |
| // TODO(alexandermont): When LoadExpectation v.1.0 is released, |
| // update this function to use the new LoadExpectation rather |
| // than calling loading_metric.html. |
| |
| var values = new tr.v.ValueSet(); |
| tr.metrics.sh.loadingMetric(values, model); |
| var ttiValues = values.getValuesNamed('timeToFirstInteractive'); |
| var intervals = []; |
| for (var bin of tr.b.getOnlyElement(ttiValues).allBins) |
| for (var diagnostics of bin.diagnosticMaps) { |
| var info = diagnostics.get('Navigation infos'); |
| intervals.push(tr.b.Range.fromExplicitRange( |
| info.value.start, info.value.interactive)); |
| } |
| return intervals.sort((x, y) => x.min - y.min); |
| } |
| |
| function ttiPowerMetric(values, model) { |
| if (!model.device.powerSeries) |
| return; |
| |
| var intervals = getNavigationTTIIntervals(model); |
| var lastLoadTime = 0; |
| var loadHistogram = new tr.v.Histogram('energy:load', |
| tr.b.Unit.byName.energyInJoules_smallerIsBetter); |
| loadHistogram.description = 'Energy consumed in page loads'; |
| loadHistogram.customizeSummaryOptions({ |
| avg: false, |
| count: false, |
| max: false, |
| min: false, |
| std: false, |
| sum: true, |
| }); |
| for (var interval of intervals) { |
| var energyInJ = model.device.powerSeries.getEnergyConsumedInJ( |
| interval.min, interval.max); |
| loadHistogram.addSample(energyInJ); |
| lastLoadTime = interval.max; |
| } |
| values.addHistogram(loadHistogram); |
| var afterLoadEnergyInJ = model.device.powerSeries.getEnergyConsumedInJ( |
| lastLoadTime, model.bounds.max); |
| var afterLoadTimeInMs = model.bounds.max - lastLoadTime; |
| var afterLoadTimeInS = tr.b.convertUnit(afterLoadTimeInMs, |
| tr.b.UnitScale.Metric.MILLI, tr.b.UnitScale.Metric.NONE); |
| var afterLoadPowerInW = afterLoadEnergyInJ / afterLoadTimeInS; |
| var afterLoadHistogram = new tr.v.Histogram('power:after_load', |
| tr.b.Unit.byName.powerInWatts_smallerIsBetter); |
| afterLoadHistogram.description = 'Average power after load'; |
| afterLoadHistogram.customizeSummaryOptions({ |
| avg: false, |
| count: false, |
| max: false, |
| min: false, |
| std: false, |
| sum: false, |
| }); |
| afterLoadHistogram.addSample(afterLoadPowerInW); |
| values.addHistogram(afterLoadHistogram); |
| } |
| |
| tr.metrics.MetricRegistry.register(ttiPowerMetric); |
| |
| return { |
| ttiPowerMetric: ttiPowerMetric |
| }; |
| }); |
| </script> |
