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 telemetry.page import page_test
   8 from telemetry.value import scalar
   9
  10 from measurements import smoothness
  11
  12
  13 class RecordPerArea(page_test.PageTest):
  14   def __init__(self, start_wait_time=2):
  15     super(RecordPerArea, self).__init__(
  16         needs_browser_restart_after_each_page=True)
  17     self._start_wait_time = start_wait_time
  18
  19   def CustomizeBrowserOptions(self, options):
  20     smoothness.Smoothness.CustomizeBrowserOptions(options)
  21     options.AppendExtraBrowserArgs([
  22         '--enable-impl-side-painting',
  23         '--enable-threaded-compositing',
  24         '--enable-gpu-benchmarking'
  25     ])
  26
  27   def ValidateAndMeasurePage(self, page, tab, results):
  28     # Wait until the page has loaded and come to a somewhat steady state.
  29     # Needs to be adjusted for every device (~2 seconds for workstation).
  30     time.sleep(self._start_wait_time)
  31
  32     # Enqueue benchmark
  33     tab.ExecuteJavaScript("""
  34         window.benchmark_results = {};
  35         window.benchmark_results.done = false;
  36         chrome.gpuBenchmarking.runMicroBenchmark(
  37             "picture_record_benchmark",
  38             function(value) {
  39               window.benchmark_results.done = true;
  40               window.benchmark_results.results = value;
  41             }, [{width: 1, height: 1},
  42                 {width: 250, height: 250},
  43                 {width: 500, height: 500},
  44                 {width: 750, height: 750},
  45                 {width: 1000, height: 1000},
  46                 {width: 256, height: 1024},
  47                 {width: 1024, height: 256}]);
  48     """)
  49
  50     tab.WaitForJavaScriptExpression('window.benchmark_results.done', 300)
  51
  52     all_data = tab.EvaluateJavaScript('window.benchmark_results.results')
  53     for data in all_data:
  54       width = data['width']
  55       height = data['height']
  56       area = width * height
  57       time_ms = data['time_ms']
  58
  59       results.AddValue(scalar.ScalarValue(
  60           results.current_page, 'area_%07d_%dx%d' % (area, width, height),
  61           'ms', time_ms))