memory.py revision 23730a6e56a168d1879203e4b3819bb36e3d8f1f 
1# Copyright (c) 2012 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
5from metrics import memory
6from metrics import power
7from telemetry.page import page_measurement
8
9class Memory(page_measurement.PageMeasurement):
10  def __init__(self):
11    super(Memory, self).__init__('RunStressMemory')
12    self._memory_metric = None
13    self._power_metric = power.PowerMetric()
14
15  def DidStartBrowser(self, browser):
16    self._memory_metric = memory.MemoryMetric(browser)
17
18  def DidNavigateToPage(self, page, tab):
19    self._memory_metric.Start(page, tab)
20    self._power_metric.Start(page, tab)
21
22  def CustomizeBrowserOptions(self, options):
23    memory.MemoryMetric.CustomizeBrowserOptions(options)
24    # Since this is a memory benchmark, we want to sample memory histograms at
25    # a high frequency.
26    options.AppendExtraBrowserArgs('--memory-metrics')
27
28  def MeasurePage(self, page, tab, results):
29    self._power_metric.Stop(page, tab)
30    self._memory_metric.Stop(page, tab)
31    self._memory_metric.AddResults(tab, results)
32    self._power_metric.AddResults(tab, results)
33
34    if tab.browser.is_profiler_active('tcmalloc-heap'):
35      # The tcmalloc_heap_profiler dumps files at regular
36      # intervals (~20 secs).
37      # This is a minor optimization to ensure it'll dump the last file when
38      # the test completes.
39      tab.ExecuteJavaScript("""
40        if (chrome && chrome.memoryBenchmarking) {
41          chrome.memoryBenchmarking.heapProfilerDump('renderer', 'final');
42          chrome.memoryBenchmarking.heapProfilerDump('browser', 'final');
43        }
44      """)
45