All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759035

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=4ccaffd67c21cd01415f1e73537e3c93c5aaa59d8cd30bb220e2b5c1892fbd9b


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

android-one

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970274424515885248

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

Suspected Commit
  Author : Xida Chen
  Commit : 177134823106e782420b7ce5150c2aa137014ee2
  Date   : Wed Aug 16 02:35:04 2017
  Subject: Use half-width GPU tiles on low-end android devices

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : thread_times.key_silk_cases
  Metric       : thread_raster_cpu_time_per_frame/http___jsfiddle.net_TLXLu_3_show_
  Change       : 39.36% | 1.04317328568 -> 1.4537678973

Revision             Result                     N
chromium@494609      1.04317 +- 0.0369681       7      good
chromium@494657      1.04405 +- 0.0142938       8      good
chromium@494669      1.04497 +- 0.0242765       6      good
chromium@494672      1.04484 +- 0.0295153       6      good
chromium@494673      1.46187 +- 0.0271367       5      bad       <--
chromium@494674      1.44525 +- 0.0521119       6      bad
chromium@494675      1.45684 +- 0.0319315       6      bad
chromium@494681      1.45503 +- 0.0533112       6      bad
chromium@494704      1.45377 +- 0.00607933      5      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...jsfiddle.net.TLXLu.3.show. thread_times.key_silk_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970274424515885248


For feedback, file a bug with component Speed>Bisection