All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759638

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8eec35c8db8ed013ba92ae24f29907f1e31fe9502219e96b958cfa902af246af


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

android-nexus5

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970002144901601456

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

Suspected Commit
  Author : Charles Harrison
  Commit : 007abddf6ad7f7d3f1491217119e3e7166faaace
  Date   : Thu Aug 17 21:39:49 2017
  Subject: Testing config: doc.write blocking change on slow connections only

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_renderer_main_cpu_time_per_frame/http___www.boingboing.net
  Change       : 50.86% | 5.43395709395 -> 8.19784837732

Revision             Result                   N
chromium@495292      5.43396 +- 1.0655        6      good
chromium@495312      5.55357 +- 0.629058      6      good
chromium@495322      5.43584 +- 1.28325       6      good
chromium@495325      5.24569 +- 1.09981       6      good
chromium@495326      5.702 +- 0.888547        6      good
chromium@495327      7.92971 +- 0.764652      6      bad       <--
chromium@495331      8.01535 +- 0.434252      6      bad
chromium@495369      8.19785 +- 0.489334      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.boingboing.net thread_times.key_mobile_sites_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970002144901601456


For feedback, file a bug with component Speed>Bisection