All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=763875

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=f4002be1083b1fc8d3cfa85c938eea3d1413d59f6af4facd5659529b361d2d04


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

chromium-rel-win7-dual
chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968751874381545632

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/yahoo.co.jp

Revision             Result                  N
chromium@500543      510.888 +- 1105.23      21      good
chromium@500591      408.753 +- 1067.42      21      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=yahoo.co.jp loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968751874381545632


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968655705749868688

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

Suspected Commit
  Author : xunjieli
  Commit : 724bb776bcdea642a5bc9cc20fe14bb0282b4900
  Date   : Wed Sep 06 14:29:20 2017
  Subject: [Telemetry] Use --ignore-certificate-errors-spki-list to bypass cert errors

Bisect Details
  Configuration: win_8_perf_bisect
  Benchmark    : loading.desktop
  Metric       : cpuTimeToFirstMeaningfulPaint_avg/pcv1-warm/Mercadolivre
  Change       : 19.66% | 99.9201111111 -> 119.565777778

Revision                                 Result                  N
chromium@500264                          99.9201 +- 5.65709      9       good
chromium@500305                          100.061 +- 2.33091      6       good
chromium@500326                          99.6223 +- 1.32681      6       good
chromium@500336                          101.89 +- 21.8509       9       good
chromium@500341                          99.52 +- 2.41476        6       good
chromium@500344                          99.2469 +- 3.05753      9       good
chromium@500344,catapult@c5a474f50f      101.082 +- 25.0725      14      good
chromium@500344,catapult@724bb776bc      114.848 +- 28.5008      9       bad       <--
chromium@500344,catapult@80c47581b1      120.679 +- 17.6508      6       bad
chromium@500344,catapult@4f611510b9      119.985 +- 17.4235      6       bad
chromium@500344,catapult@442f46edf7      116.843 +- 21.3451      6       bad
chromium@500345                          120.409 +- 17.4097      6       bad
chromium@500346                          114.553 +- 23.5934      6       bad
chromium@500428                          117.443 +- 22.2973      9       bad
chromium@500592                          119.566 +- 24.02        9       bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=Mercadolivre loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968655705749868688


For feedback, file a bug with component Speed>Bisection