All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=752066

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=80058b42ad4f16dddca0bfe0dc75ebab058a409acde8d9e735a63866792700dd


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

android-nexus5X
android-nexus6
android-nexus7v2
android-webview-nexus5X
chromium-rel-mac11
chromium-rel-mac12
chromium-rel-win7-dual
chromium-rel-win8-dual
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972282999281393376

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

Suspected Commit
  Author : Helen Li
  Commit : 73f7cac54a1108eac07d5c7c3367f979a899a0bd
  Date   : Thu Jul 27 14:57:57 2017
  Subject: [wpr-go] Switch system_health_mobile.json to use go

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : v8.browsing_mobile
  Metric       : v8-gc-total_avg/browse_chrome/browse_chrome_omnibox
  Change       : 327.76% | 1.04152307735 -> 4.45521014493

Revision             Result                    N
chromium@489904      1.04152 +- 0.0513357      6      good
chromium@489918      1.06139 +- 0.104868       6      good
chromium@489922      1.05798 +- 0.0517056      6      good
chromium@489923      4.02847 +- 0.390096       6      bad       <--
chromium@489924      4.06637 +- 0.295846       6      bad
chromium@489925      3.63415 +- 2.75412        9      bad
chromium@489932      4.09626 +- 0.318391       6      bad
chromium@489959      4.09242 +- 0.604851       6      bad
chromium@490013      4.18826 +- 0.397007       6      bad
chromium@490121      4.37629 +- 0.335878       6      bad
chromium@490338      4.45521 +- 0.299213       6      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=browse.chrome.omnibox v8.browsing_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8972282999281393376


For feedback, file a bug with component Speed>Bisection