All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=795776

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c829af9dc1241e3c0193a07800be4806cd173cbb27af5e6a76fa816c687c7415


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

android-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8959854625357578448

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

Suspected Commit
  Author : Ali Ijaz Sheikh
  Commit : 4623b8223b487fb18b3af12fcf4fdbb7a194eca3
  Date   : Tue Dec 12 19:12:03 2017
  Subject: [heap] replace DisableInlineAllocationSteps with PauseAllocationObservers

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : total:500ms_window:renderer_eqt_max/browse_chrome/browse_chrome_omnibox
  Change       : 22.25% | 406.547833333 -> 496.9875

Revision                           Result                  N
chromium@524053                    406.548 +- 32.4783      6      good
chromium@524056                    412.396 +- 26.082       9      good
chromium@524056,v8@10d9c31488      404.877 +- 24.6774      6      good
chromium@524056,v8@4623b8223b      476.421 +- 23.6832      6      bad       <--
chromium@524056,v8@1220809924      469.641 +- 27.5988      6      bad
chromium@524056,v8@18d7c66131      469.12 +- 32.3715       6      bad
chromium@524056,v8@f514cc967d      469.535 +- 25.8718      6      bad
chromium@524056,v8@d5fbf0edcf      450.864 +- 69.1452      9      bad
chromium@524057                    452.189 +- 22.8711      6      bad
chromium@524058                    472.134 +- 26.8938      6      bad
chromium@524063                    482.652 +- 41.9134      6      bad
chromium@524073                    481.727 +- 66.1269      6      bad
chromium@524093                    462.222 +- 29.0085      6      bad
chromium@524133                    496.988 +- 33.3103      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 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/8959854625357578448


For feedback, file a bug with component Speed>Bisection