All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=774898

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=0cdc8e9e005b544fc0b9645a617049430276360b2d72fb75cd4446b738f957f2


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

android-nexus5
android-nexus5X
android-webview-nexus5X
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965606021615424320

Please triage.

Bisects running. Assigning to perf sheriff.

=== 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: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : v8.runtimestats.browsing_mobile
  Metric       : IC:duration_avg/browse_shopping/browse_shopping_avito
  Change       : 338.76% | 1424.71833333 -> 6251.04566667

Revision                           Result                  N
chromium@503829                    1424.72 +- 122.858      6      good
chromium@505048                    1433.72 +- 119.006      6      good
chromium@505657                    1410.0 +- 185.856       6      good
chromium@505696                    1454.7 +- 191.283       6      good
chromium@505715                    1448.6 +- 186.739       6      good
chromium@505725                    1429.28 +- 190.753      6      good
chromium@505730                    1417.1 +- 92.6467       6      good
chromium@505731                    1439.67 +- 201.575      6      good
chromium@505731,v8@08db4d7652      6118.56 +- 1301.45      6      bad       <--
chromium@505731,v8@17d86d76fb      5918.16 +- 1374.99      6      bad
chromium@505731,v8@1fa0f9ba4c      6029.5 +- 1052.47       6      bad
chromium@505732                    6282.26 +- 748.79       6      bad
chromium@505734                    6152.84 +- 1102.22      6      bad
chromium@505810                    6135.71 +- 1237.48      6      bad
chromium@505963                    5984.98 +- 1166.89      6      bad
chromium@506266                    6349.64 +- 421.184      6      bad
chromium@508702                    6251.05 +- 981.59       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.shopping.avito v8.runtimestats.browsing_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8965606021615424320


For feedback, file a bug with component Speed>Bisection