tools/perf/measurements/record_per_area.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 import time
   6
   7 from metrics import smoothness
   8 from telemetry.page import page_measurement
   9
  10 class RecordPerArea(page_measurement.PageMeasurement):
  11   def __init__(self):
  12     super(RecordPerArea, self).__init__('', True)
  13
  14   def AddCommandLineOptions(self, parser):
  15     parser.add_option('--start-wait-time', dest='start_wait_time',
  16                       default=2,
  17                       help='Wait time before the benchmark is started ' +
  18                       '(must be long enought to load all content)')
  19
  20   def CustomizeBrowserOptions(self, options):
  21     smoothness.SmoothnessMetrics.CustomizeBrowserOptions(options)
  22     options.AppendExtraBrowserArgs([
  23         '--enable-impl-side-painting',
  24         '--force-compositing-mode',
  25         '--enable-threaded-compositing',
  26         '--enable-gpu-benchmarking'
  27     ])
  28
  29   def MeasurePage(self, page, tab, results):
  30     # Wait until the page has loaded and come to a somewhat steady state.
  31     # Needs to be adjusted for every device (~2 seconds for workstation).
  32     time.sleep(float(self.options.start_wait_time))
  33
  34     # Enqueue benchmark
  35     tab.ExecuteJavaScript("""
  36         window.benchmark_results = {};
  37         window.benchmark_results.done = false;
  38         chrome.gpuBenchmarking.runMicroBenchmark(
  39             "picture_record_benchmark",
  40             function(value) {
  41               window.benchmark_results.done = true;
  42               window.benchmark_results.results = value;
  43             }, [{width: 1, height: 1},
  44                 {width: 250, height: 250},
  45                 {width: 500, height: 500},
  46                 {width: 750, height: 750},
  47                 {width: 1000, height: 1000},
  48                 {width: 256, height: 1024},
  49                 {width: 1024, height: 256}]);
  50     """)
  51
  52     tab.WaitForJavaScriptExpression('window.benchmark_results.done', 300)
  53
  54     all_data = tab.EvaluateJavaScript('window.benchmark_results.results')
  55     for data in all_data:
  56       width = data['width']
  57       height = data['height']
  58       area = width * height
  59       time_ms = data['time_ms']
  60
  61       results.Add('area_%07d_%dx%d' % (area, width, height), 'ms', time_ms)
  62