[Telemetry] Output perf results for each URL in addition to the average.

This will create a new tab for each metric with "_by_url" appended to it, for
example, "first_paint_by_url". The new tab will have a trace for each URL.

With the existing perf dashboard UI, this tab will have so many traces that it
will be basically useless. However in the new UI we need to make sense of this
by only showing each trace as its name is clicked.

BUG=163520
TEST=tools/perf/run_multipage_benchmarks --browser=release scrolling_benchmark tools/perf/page_sets/top_25.json

Review URL: https://codereview.chromium.org/11450013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@171356 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 12 insertions, 0 deletions

diff --git a/tools/telemetry/telemetry/multi_page_benchmark.py b/tools/telemetry/telemetry/multi_page_benchmark.py
index a7a3d11..d4893c6 100644
--- a/tools/telemetry/telemetry/multi_page_benchmark.py
+++ b/tools/telemetry/telemetry/multi_page_benchmark.py
@@ -33,6 +33,7 @@ class BenchmarkResults(page_test.PageTestResults):
     super(BenchmarkResults, self).__init__()
     self.results_summary = defaultdict(list)
     self.page_results = []
+    self.urls = []
     self.field_names = None
     self.field_units = {}
     self.field_types = {}
@@ -66,6 +67,7 @@ results! You must return the same dict keys every time."""
       self.field_names.sort()
 
     self.page_results.append(self._page_values)
+    self.urls.append(self._page.display_url)
     for name in self.field_names:
       units = self.field_units[name]
       data_type = self.field_types[name]
@@ -83,6 +85,12 @@ results! You must return the same dict keys every time."""
         trace += (trace_tag or '')
       else:
         trace = measurement + (trace_tag or '')
+      if len(self.urls) > 1:
+        print
+        assert len(self.urls) == len(values)
+        for i, value in enumerate(values):
+          PrintPerfResult(measurement + '_by_url', self.urls[i], [value], units,
+                          'unimportant')
       PrintPerfResult(measurement, trace, values, units, data_type)
 
 
diff --git a/tools/telemetry/telemetry/page.py b/tools/telemetry/telemetry/page.py
index c71be22..03b3807 100644
--- a/tools/telemetry/telemetry/page.py
+++ b/tools/telemetry/telemetry/page.py
@@ -50,5 +50,9 @@ class Page(object):
     # Just replace all special characters in the url with underscore.
     return re.sub('[^a-zA-Z0-9]', '_', self.url)
 
+  @property
+  def display_url(self):
+    return re.sub('https?://', '', self.url)
+
   def __str__(self):
     return self.url