tab_load_times = []
TabLoadTime = collections.namedtuple(
'TabLoadTime',
- ['load_start_ms', 'load_duration_ms'])
+ ['load_start_ms', 'load_duration_ms', 'request_start_ms'])
def RecordTabLoadTime(t):
try:
print "Page: ", tab_title, " didn't finish loading."
return
+ perf_timing = t.EvaluateJavaScript('window.performance.timing')
+ if 'requestStart' not in perf_timing:
+ perf_timing['requestStart'] = 0 # Exclude from benchmark results
+ print 'requestStart is not supported by this browser'
+
tab_load_times.append(TabLoadTime(
int(result['load_start_ms']),
- int(result['load_duration_ms'])))
+ int(result['load_duration_ms']),
+ int(perf_timing['requestStart'])))
except util.TimeoutException:
# Low memory Android devices may not be able to load more than
# one tab at a time, so may timeout when the test attempts to
results.AddValue(scalar.ScalarValue(
results.current_page, 'foreground_tab_load_complete', 'ms',
foreground_tab_load_complete))
+ if (foreground_tab_stats.request_start_ms > 0):
+ results.AddValue(scalar.ScalarValue(
+ results.current_page, 'foreground_tab_request_start', 'ms',
+ foreground_tab_stats.request_start_ms - browser_main_entry_time_ms))
def AddResults(self, tab, results):
get_histogram_js = 'statsCollectionController.getBrowserHistogram("%s")'