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Issue metadata

Status: Duplicate
Owner:
Closed: Sep 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1%-12.9% regression in scheduler.tough_scheduling_cases at 420072:420164

Project Member Reported by benjhayden@chromium.org, Sep 25 2016

Issue description

See the link to graphs below.
 
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Sep 25 2016

Mergedinto: 649363
Status: Duplicate (was: Assigned)

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


===== SUSPECTED CL(s) =====
Subject : Merge all Field Trial Testing Configuration Together
Author  : robliao
Commit description:
  
This change brings together many of the separate platform specific
Field Trial Testing configurations together, reducing duplication.

BUG=637095
TEST=Manually Compare Old and New Resulting C++ files

* - ["android", "chromeos", "ios", "linux", "mac", "win"]

fieldtrial_to_struct_master.py \
    fieldtrial_testing_config_*.json \
    --namespace=chrome_variations \
    --schema=fieldtrial_testing_config_schema.json \
    --output=old/fieldtrial_testing_config_*

fieldtrial_to_struct.py \
    fieldtrial_testing_config.json \
    --namespace=chrome_variations \
    --schema=fieldtrial_testing_config_schema.json \
    --platform=* \
    --output=new/fieldtrial_testing_config_*

diff old/fieldtrial_testing_config_*.[cc|h] \
     new/fieldtrial_testing_config_*.[cc|h]

No material differences.

Review-Url: https://codereview.chromium.org/2296493002
Cr-Commit-Position: refs/heads/master@{#420112}
Commit  : 74ce2fa9c04444812d985ef37ecd377e23e09145
Date    : Wed Sep 21 18:36:33 2016


===== TESTED REVISIONS =====
Revision         Mean       Std Dev      N  Good?
chromium@420078  0.0868157  0.00173043   5  good
chromium@420098  0.0865522  0.00166683   5  good
chromium@420108  0.085612   0.00122782   5  good
chromium@420111  0.0864068  0.00119568   5  good
chromium@420112  0.0972932  0.000840907  5  bad    <--
chromium@420113  0.0976136  0.00178666   5  bad
chromium@420117  0.0975356  0.00152183   5  bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 649998

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests scheduler.tough_scheduling_cases
Test Metric: queueing_durations/queueing_durations
Relative Change: 12.35%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1685
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9000579357797223968


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=4972118696001536

| 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!

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