Tab Switching Benchmark for ChromeOS

tools/perf/contrib/cros_benchmarks/tab_switching_bench.py

Index: tools/perf/contrib/cros_benchmarks/tab_switching_bench.py
diff --git a/tools/perf/contrib/cros_benchmarks/tab_switching_bench.py b/tools/perf/contrib/cros_benchmarks/tab_switching_bench.py
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index 0000000000000000000000000000000000000000..802f93230c48190a1a5ee424f31153097de178c0
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+++ b/tools/perf/contrib/cros_benchmarks/tab_switching_bench.py
@@ -0,0 +1,44 @@
+# Copyright 2013 The Chromium Authors. All rights reserved.

[bccheng, 2017/05/19 09:09:14]

Change it to 2017?

[vovoy, 2017/05/22 03:54:08]

Done.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import os
+
+from core import perf_benchmark
+
+from contrib.cros_benchmarks.tab_switching_measure import TabSwitchingMeasurement

[deanliao_goog, 2017/05/19 09:49:46]

Import module, not class.
https://google.github.io/styleguide/pyguide.html?showone=Imports#Imports

[vovoy, 2017/05/22 03:54:08]

Done.

+from contrib.cros_benchmarks.tab_switching_stories import CrosMultiTabTypical24Story
+from telemetry import benchmark
+from telemetry import story
+
+
+@benchmark.Owner(emails=['vovoy@chromium.org'],
+                 component='OS>Performance')
+@benchmark.Enabled('chromeos')
+class CrosTabSwitchingTypical24(perf_benchmark.PerfBenchmark):
+  """This test records the MPArch.RWH_TabSwitchPaintDuration histogram.

[deanliao_goog, 2017/05/19 09:49:46]

Please rewrite the one-line description of the benchmark. "It records what... "
should be placed in detail or even in measurement code. 

Also please rewrite the long description to explain what this benchmark wants to
measure and how it can be used.

[vovoy, 2017/05/22 03:54:08]

Done.

+
+  The histogram is a measure of the time between when a tab was requested to be
+  shown, and when first paint occurred. The script opens 24 pages in different
+  tabs, waits for them to load, and then switches to each tab and records the
+  metric. The pages were chosen from Alexa top ranking sites.
+  """
+  test = TabSwitchingMeasurement
+
+  @classmethod
+  def AddBenchmarkCommandLineArgs(cls, parser):
+    parser.add_option('--tabset-repeat', type='int', default=1,
+                      help='repeat tab page set')
+
+  def CreateStorySet(self, options):
+    story_set = story.StorySet(
+        archive_data_file='data/tab_switching.json',
+        base_dir=os.path.dirname(os.path.abspath(__file__)),
+        cloud_storage_bucket=story.PARTNER_BUCKET)
+    story_set.AddStory(CrosMultiTabTypical24Story(
+        story_set, options.tabset_repeat))
+    return story_set
+
+  @classmethod
+  def Name(cls):
+    return 'cros_tab_switching.typical_24'