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Side by Side Diff: tools/perf/measurements/page_cycler.py

Issue 1914233003: [tools/perf] Delete unused variable (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 7 months ago
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1 # Copyright 2012 The Chromium Authors. All rights reserved. 1 # Copyright 2012 The Chromium Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be 2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file. 3 # found in the LICENSE file.
4 4
5 """The page cycler measurement. 5 """The page cycler measurement.
6 6
7 This measurement registers a window load handler in which is forces a layout and 7 This measurement registers a window load handler in which is forces a layout and
8 then records the value of performance.now(). This call to now() measures the 8 then records the value of performance.now(). This call to now() measures the
9 time from navigationStart (immediately after the previous page's beforeunload 9 time from navigationStart (immediately after the previous page's beforeunload
10 event) until after the layout in the page's load event. In addition, two garbage 10 event) until after the layout in the page's load event. In addition, two garbage
(...skipping 135 matching lines...) Expand 10 before | Expand all | Expand 10 after
146 # We do the warm runs first for two reasons. The first is so we can 146 # We do the warm runs first for two reasons. The first is so we can
147 # preserve any initial profile cache for as long as possible. 147 # preserve any initial profile cache for as long as possible.
148 # The second is that, if we did cold runs first, we'd have a transition 148 # The second is that, if we did cold runs first, we'd have a transition
149 # page set during which we wanted the run for each URL to both 149 # page set during which we wanted the run for each URL to both
150 # contribute to the cold data and warm the catch for the following 150 # contribute to the cold data and warm the catch for the following
151 # warm run, and clearing the cache before the load of the following 151 # warm run, and clearing the cache before the load of the following
152 # URL would eliminate the intended warmup for the previous URL. 152 # URL would eliminate the intended warmup for the previous URL.
153 return self._has_loaded_page[url] >= self._cold_run_start_index 153 return self._has_loaded_page[url] >= self._cold_run_start_index
154 154
155 def DidRunPage(self, platform): 155 def DidRunPage(self, platform):
156 del platform # unused
156 self._power_metric.Close() 157 self._power_metric.Close()
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