All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758992

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=f1c702fb6248a1d2548287c956b3e2605c641f874dd668c202964fc006a62d38


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

android-nexus7v2

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970283306070921328

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

Suspected Commit
  Author : Brian White
  Commit : 7662ff8cb53121cd4d8916007d430b36efd45895
  Date   : Thu Aug 24 00:03:13 2017
  Subject: Validate histograms before and after each task on Android.

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : thread_times.simple_mobile_sites
  Metric       : thread_renderer_compositor_cpu_time_per_frame/http___www.nyc.gov
  Change       : 162.32% | 2.05936179333 -> 5.40213664403

Revision             Result                    N
chromium@496667      2.05936 +- 0.189711       6      good
chromium@496809      2.06123 +- 0.0651332      6      good
chromium@496845      2.07182 +- 0.113466       6      good
chromium@496863      2.05362 +- 0.0656335      6      good
chromium@496872      2.0474 +- 0.095458        6      good
chromium@496876      2.03733 +- 0.0863379      6      good
chromium@496877      2.27258 +- 0.131991       6      good
chromium@496878      5.32765 +- 0.335221       6      bad       <--
chromium@496880      5.1156 +- 0.32237         6      bad
chromium@496950      5.40214 +- 0.424591       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=http...www.nyc.gov thread_times.simple_mobile_sites

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970283306070921328


For feedback, file a bug with component Speed>Bisection