All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=666098

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgi9XJugkM


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

chromium-rel-mac-hdd

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8995796154533465600

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


=== Bisection aborted ===
The bisect was aborted because Bisect cannot identify a culprit: Bisect failed to reproduce the regression with enough confidence.
Please contact the the team (see below) if you believe this is in error.

===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N     Good?
chromium@431916  16.7993  168.15   2972  good
chromium@431998  17.2233  1027.9   2900  bad

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 666098

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...letmespellitoutforyou.com.samples.svg.filter.terrain.svg smoothness.tough_filters_cases
Test Metric: frame_times/http___letmespellitoutforyou.com_samples_svg_filter_terrain.svg
Relative Change: None

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/885
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8995796154533465600


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6710741736882176

| 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/8995791863120294944

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


=== Bisection aborted ===
The bisect was aborted because Bisect cannot identify a culprit: Bisect failed to reproduce the regression with enough confidence.
Please contact the the team (see below) if you believe this is in error.

===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N     Good?
chromium@431916  17.0311  345.806  2933  good
chromium@431998  16.9206  234.354  2951  bad

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 666098

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...letmespellitoutforyou.com.samples.svg.filter.terrain.svg smoothness.tough_filters_cases
Test Metric: frame_times/http___letmespellitoutforyou.com_samples_svg_filter_terrain.svg
Relative Change: None

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/886
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8995791863120294944


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5251217897291776

| 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/8982636229563656784

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: mac_hdd_perf_bisect
  Benchmark    : smoothness.tough_filters_cases
  Metric       : frame_times/http___letmespellitoutforyou.com_samples_svg_filter_terrain.svg

Revision             Result                  N
chromium@431916      17.0311 +- 345.806      2933      good
chromium@431998      16.9206 +- 234.354      2951      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...letmespellitoutforyou.com.samples.svg.filter.terrain.svg smoothness.tough_filters_cases

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982636229563656784

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5251217897291776


| 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!

This alert was found before M-60 branched. Closing as WontFix as this is believed to either be invalid or non-reproducible.