All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=647354

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgmZ3krAoM


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

chromium-rel-mac-hdd

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9001428920068259936

===== BISECT JOB RESULTS =====
Status: completed


=== Bisection aborted ===
The bisect was aborted because The metric values for the initial "good" and "bad" revisions do not represent a clear regression.
Please contact the the team (see below) if you believe this is in error.

=== Warnings ===
The following warnings were raised by the bisect job:

 * Bisect failed to reproduce the regression with enough confidence.

===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@417880  27.5105  4.10171  18  good
chromium@417920  28.9752  5.71044  18  bad

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 647354

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.top_25_smooth
Test Metric: mean_input_event_latency/http___news.yahoo.com
Relative Change: 23.94%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/796
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9001428920068259936


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5879692572229632

| 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!

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9000819312938887456

===== BISECT JOB RESULTS =====
Status: failed


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@417880  27.1362  3.62645  41  good

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 647354

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.top_25_smooth
Test Metric: mean_input_event_latency/http___news.yahoo.com
Relative Change: 18.64%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/806
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9000819312938887456


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5774989549109248

| 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!

perf sheriff fixit: unsetting owner for bugs owned by perf sheriffs to clarify that they are triaged by a rotation.

Bisect couldn't reproduce, no ref build results, only one platform; also, this alert appears to have recovered (see graph)

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8982596487756129568

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: mac_hdd_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : mean_input_event_latency/http___news.yahoo.com

Suspected Commit Range
  -1 commits in range
  Mismatching LKGR/FKBR depots, unable to provide handy url.
  good_revision: chromium@cd61c6bf95b3770211a18cc6f24dd990b9c3bcb4
  bad_revision : None@None


Revision             Result                  N
chromium@417880      27.1362 +- 3.62645      41      good

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982596487756129568

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5774989549109248


| 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 Speed>Bisection.  Thank you!