All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=770887

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=bc9c8bd727b6335a9a08568113e4d367a4e05f51a233383d9acd4f790dda34bf


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

android-nexus5
android-nexus5X
android-nexus6
android-nexus7v2
android-one
android-webview-nexus5X
android-webview-nexus6
chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac12
chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-ati
chromium-rel-win8-dual
linux-release

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8966810437603038544

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

Suspected Commit
  Author : Marja Hölttä
  Commit : 40856948a64e2b76bc121a8841a763836dbf1b37
  Date   : Thu Sep 28 12:41:56 2017
  Subject: [parser] Skipping inner funcs: Turn off FLAG_preparser_scope_analysis.

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : timeToFirstPaint_avg/load_media/load_media_dailymotion
  Change       : 10.55% | 4194.76755556 -> 4637.47788889

Revision                           Result                  N
chromium@505173                    4194.77 +- 721.447      9      good
chromium@505210                    4074.54 +- 267.989      7      good
chromium@505210,v8@4ba6f15ece      4147.02 +- 505.129      8      good
chromium@505210,v8@40856948a6      4614.01 +- 234.404      8      bad       <--
chromium@505210,v8@193dcf7693      4756.47 +- 884.055      6      bad
chromium@505210,v8@e1cdda2512      4697.55 +- 554.734      6      bad
chromium@505211                    4598.19 +- 135.096      6      bad
chromium@505212                    4678.98 +- 544.768      6      bad
chromium@505213                    4589.87 +- 217.539      6      bad
chromium@505215                    4732.75 +- 707.977      7      bad
chromium@505219                    4693.05 +- 606.971      5      bad
chromium@505228                    4569.1 +- 199.516       7      bad
chromium@505246                    4680.37 +- 608.019      8      bad
chromium@505319                    4615.55 +- 321.51       7      bad
chromium@505463                    4637.48 +- 820.523      9      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 --story-filter=load.media.dailymotion system_health.common_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8966810437603038544


For feedback, file a bug with component Speed>Bisection