All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=681594

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgoOn9twoM


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

chromium-rel-mac11

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8990294272124131152

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

Suspected Commit
  Author : flackr
  Commit : 96f33ef6f7c21303a68dc52c3e27a925fb200ce5
  Date   : Fri Jan 13 22:05:44 2017
  Subject: Revert "Round the scroll offset synced back to main instead of flooring." and disable CompositeOpaqueFixedPosition

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : first_gesture_scroll_update_latency/http___techcrunch.com
  Change       : 1429.82% | 1.6905 -> 25.8616666667

Revision             Result                    N
chromium@443638      1.6905 +- 0.556589        6      good
chromium@443688      1.48433 +- 0.300638       6      good
chromium@443690      1.44767 +- 0.0861356      6      good
chromium@443691      26.597 +- 5.19463         6      bad       <--
chromium@443692      26.1483 +- 11.114         6      bad
chromium@443695      25.5847 +- 9.70391        6      bad
chromium@443701      25.6543 +- 6.865          6      bad
chromium@443713      27.2853 +- 3.53507        6      bad
chromium@443738      25.8617 +- 3.35917        6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...techcrunch.com smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8990294272124131152

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5906825372762112


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Tests>AutoBisect.  Thank you!