All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=772284

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=ce320cbf2cbfd85082b194d3bcff1b944dce47798d471d5b2edfd1d313663e1c


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

android-webview-nexus5X
chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-pro
chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8966510323710213488

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

Suspected Commit
  Author : Benedikt Meurer
  Commit : 08db4d7652967c1ed12450a73ff53f5d6bbf1fdf
  Date   : Mon Oct 02 12:35:05 2017
  Subject: [ic] Properly handle polymorphic symbol accesses.

Bisect Details
  Configuration: winx64_10_perf_bisect
  Benchmark    : speedometer2
  Metric       : BackboneJS-TodoMVC/Speedometer2
  Change       : 9.14% | 146.376333333 -> 159.75625

Revision                           Result                  N
chromium@505694                    146.376 +- 5.68725      6      good
chromium@505729                    149.074 +- 6.27546      6      good
chromium@505731                    146.395 +- 3.1482       6      good
chromium@505731,v8@08db4d7652      159.19 +- 3.74648       6      bad       <--
chromium@505731,v8@17d86d76fb      159.719 +- 5.90497      6      bad
chromium@505731,v8@1fa0f9ba4c      159.256 +- 4.52801      6      bad
chromium@505732                    157.742 +- 3.43129      6      bad
chromium@505734                    158.166 +- 4.41824      6      bad
chromium@505739                    160.116 +- 5.7384       6      bad
chromium@505747                    159.364 +- 5.87336      6      bad
chromium@505764                    159.756 +- 4.71657      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=Speedometer2 speedometer2

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8966510323710213488


For feedback, file a bug with component Speed>Bisection