Index: tools/perf/perf_tools/loading_benchmark.py |
diff --git a/tools/perf/perf_tools/loading_benchmark.py b/tools/perf/perf_tools/loading_benchmark.py |
new file mode 100644 |
index 0000000000000000000000000000000000000000..71a244c98caa37dd6b9a5ccd874a7237195cfb95 |
--- /dev/null |
+++ b/tools/perf/perf_tools/loading_benchmark.py |
@@ -0,0 +1,36 @@ |
+# Copyright (c) 2012 The Chromium Authors. All rights reserved. |
+# Use of this source code is governed by a BSD-style license that can be |
+# found in the LICENSE file. |
+ |
+from telemetry import multi_page_benchmark |
+ |
+class LoadingBenchmark(multi_page_benchmark.MultiPageBenchmark): |
+ @property |
+ def results_are_the_same_on_every_page(self): |
+ return False |
+ |
+ def WillNavigateToPage(self, page, tab): |
+ tab.timeline.Start() |
+ |
+ def MeasurePage(self, page, tab, results): |
+ # In current telemetry tests, all tests wait for DocumentComplete state. |
+ # |
+ # TODO(nduca): when crbug.com/168431 is fixed, modify the page sets to |
+ # recognize loading as a toplevel action. |
+ tab.timeline.Stop() |
+ |
+ events = tab.timeline.timeline_model.GetAllEvents() |
+ |
+ events_by_name = {} |
+ for e in events: |
+ if e.name not in events_by_name: |
tonyg
2013/01/10 18:53:05
Use collections.defaultdict(list) to clean this up
|
+ events_by_name[e.name] = [] |
+ events_by_name[e.name].append(e) |
+ |
+ for key, group in events_by_name.items(): |
+ times = [e.self_time_ms for e in group] |
+ total = sum(times) |
+ biggest_jank = max(times) |
+ results.Add(key, 'ms', total) |
+ results.Add(key + '_max', 'ms', biggest_jank) |
+ results.Add(key + '_avg', 'ms', total / len(times)) |