All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=753827

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=a4dea2b7a6fd177f175daf5d0bd13726f0f3bf550d37d4978e4ed8a92b3afe3b


Bot(s) for this bug's original alert(s):

android-nexus7v2
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971725966157804768

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : xunjieli
  Commit : 357e1deefca78c61e457f340270c9cd6f38321f5
  Date   : Thu Aug 03 22:16:30 2017
  Subject: [wpr-go] Use a dummy cert if no cert is recorded

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : tracing.tracing_with_debug_overhead
  Metric       : trace_import_duration_avg/trace_import_duration_avg
  Change       : 13.39% | 1955.25416049 -> 2217.04998148

Revision                                 Result                  N
chromium@491783                          1955.25 +- 385.125      9      good
chromium@491859                          1903.67 +- 144.717      6      good
chromium@491897                          1869.04 +- 175.228      6      good
chromium@491916                          1861.51 +- 196.985      6      good
chromium@491921                          1851.34 +- 112.66       6      good
chromium@491924                          1915.44 +- 276.433      9      good
chromium@491924,catapult@b0f1e24d46      1903.68 +- 518.655      9      good
chromium@491924,catapult@357e1deefc      2144.45 +- 388.757      9      bad       <--
chromium@491925                          2077.17 +- 114.904      6      bad
chromium@491926                          2196.64 +- 556.935      6      bad
chromium@491935                          2217.05 +- 188.723      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests tracing.tracing_with_debug_overhead

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971725966157804768


For feedback, file a bug with component Speed>Bisection