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