All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=646731

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgmbmdrgoM


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

chromium-rel-mac-hdd

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9001563404347472464

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


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@418233  419.685  8.58056  9  good
chromium@418325  446.139  38.654   7  bad

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 646731

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests speedometer
Test Metric: FlightJS-TodoMVC/FlightJS-TodoMVC
Relative Change: 8.89%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/788
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9001563404347472464


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5269535962169344

| 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/8982632222506072096

=== 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    : speedometer
  Metric       : FlightJS-TodoMVC/FlightJS-TodoMVC

Suspected Commit Range
  1 commits in range
  https://chromium.googlesource.com/chromium/src/+log/88f013bd979ec30333bd7ce6c0bd2e0b5f6f2742..2a4438f340407ca87bae9dcdce5f7a1360df9f32


Revision             Result                  N
chromium@418233      419.685 +- 8.58056      9      good
chromium@418325      446.139 +- 38.654       7      bad

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

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982632222506072096

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5269535962169344


| 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!