All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=763118

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=572213959bd030ebc9bf600cccd229f5c54f1921f66a2ead1713e7a84aae9de3


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

chromium-rel-mac11-pro

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969078612438470752

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

Suspected Commit
  Author : Marja Hölttä
  Commit : 36d703778ccd0d2777e0d4b69ed6e65e39a9f521
  Date   : Mon Sep 04 16:05:39 2017
  Subject: [parser] Tentatively enable FLAG_preparser_scope_analysis.

Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstContentfulPaint_avg/pcv1-cold/money.cnn
  Change       : 12.47% | 488.542333335 -> 549.462777777

Revision                           Result                  N
chromium@499528                    488.542 +- 35.7352      9       good
chromium@499535                    484.16 +- 37.875        9       good
chromium@499537                    484.728 +- 40.8175      14      good
chromium@499538                    483.785 +- 33.7281      14      good
chromium@499538,v8@1c1457fa70      485.963 +- 41.5915      14      good
chromium@499538,v8@36d703778c      536.805 +- 144.876      14      bad       <--
chromium@499538,v8@7abdadca0e      534.083 +- 151.593      14      bad
chromium@499539                    528.293 +- 151.919      14      bad
chromium@499542                    549.598 +- 151.268      14      bad
chromium@499556                    552.872 +- 111.34       9       bad
chromium@499584                    549.463 +- 109.282      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=money.cnn loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969078612438470752


For feedback, file a bug with component Speed>Bisection