All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=763821

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2b17c9b8c4903421c2fe60ba0d7304dfc2dab4a55bc6a68135a185e0ebd613fd


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

chromium-rel-win7-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968763099098593504

=== Auto-CCing suspected CL author marja@chromium.org ===

Hi marja@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : Marja Hölttä
  Commit : 9f21cab8c80bb6bbdb926cf4e950626924446eec
  Date   : Fri Sep 08 13:36:04 2017
  Subject: Revert "Reland#2 [parser] Refactor streaming scanner streams."

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop
  Metric       : Parse-Background:duration_avg/browse_search/browse_search_google_india
  Change       : 7.22% | 55.861952381 -> 59.8952142857

Revision                           Result                  N
chromium@500642                    55.862 +- 13.3645       21      good
chromium@500695                    56.7185 +- 8.49131      14      good
chromium@500722                    56.6148 +- 14.3036      21      good
chromium@500735                    56.729 +- 12.8025       21      good
chromium@500737                    56.4877 +- 7.2775       14      good
chromium@500737,v8@9f21cab8c8      61.877 +- 8.44052       6       bad       <--
chromium@500737,v8@f162ea9249      59.6995 +- 19.0368      21      bad
chromium@500737,v8@dca02f0c28      60.3594 +- 12.5034      14      bad
chromium@500737,v8@62649c8e7e      59.957 +- 5.30773       6       bad
chromium@500738                    59.3578 +- 14.455       21      bad
chromium@500739                    59.088 +- 12.5134       21      bad
chromium@500742                    61.226 +- 12.9977       14      bad
chromium@500748                    59.8952 +- 13.7936      14      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=browse.search.google.india v8.runtimestats.browsing_desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968763099098593504


For feedback, file a bug with component Speed>Bisection