All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=755613

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=50947b486ce7f98fca394d81e307b8fe123db812b018553d4342f4a66ba7d09f


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

android-one

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971173195116217648

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

Suspected Commit
  Author : Xida Chen
  Commit : ea20f077cb3981dce10270048decfab2a33e9fcd
  Date   : Thu Aug 10 22:21:06 2017
  Subject: Enable Waterfall testing for reduced soft tile memory experiment

Bisect Details
  Configuration: android_one_perf_bisect
  Benchmark    : smoothness.sync_scroll.key_mobile_sites_smooth
  Metric       : mean_input_event_latency/http___shop.mobileweb.ebay.com_searchresults?kw_viking+helmet
  Change       : 35.86% | 38.4981666667 -> 52.303

Revision             Result                  N
chromium@493555      38.4982 +- 4.19894      6      good
chromium@493557      37.1167 +- 4.8905       6      good
chromium@493558      54.3892 +- 2.77657      6      bad       <--
chromium@493559      53.578 +- 3.0042        6      bad
chromium@493563      53.05 +- 4.73633        6      bad
chromium@493571      53.5425 +- 4.2779       6      bad
chromium@493586      55.1915 +- 5.79341      6      bad
chromium@493616      54.1598 +- 5.63925      6      bad
chromium@493676      52.303 +- 2.15367       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...shop.mobileweb.ebay.com.searchresults.kw.viking.helmet smoothness.sync_scroll.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/8971173195116217648


For feedback, file a bug with component Speed>Bisection