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Issue metadata

Status: Duplicate
Merged: issue 644431
Owner:
Closed: Sep 2016
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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Artificial regression (ref+non-ref) in smoothness.gpu_rasterization.polymer at 416452:416455

Project Member Reported by primiano@chromium.org, Sep 15 2016

Issue description

This is not a real regressions, both the ref and non-ref build jumped.

This is either a side-effect of skyostil@ https://codereview.chromium.org/2304703003 or perezju@ https://codereview.chromium.org/2304893002
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=647331

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2aXx7ggM


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

android-nexus5
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Sep 15 2016

Mergedinto: 644431
Status: Duplicate (was: Assigned)

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


===== SUSPECTED CL(s) =====
Subject : Roll src/third_party/catapult/ 54acca7c4..4f812c903 (1 commit).
Author  : catapult-deps-roller
Commit description:
  
https://chromium.googlesource.com/external/github.com/catapult-project/catapult.git/+log/54acca7c4f74..4f812c9035e6

$ git log 54acca7c4..4f812c903 --date=short --no-merges --format='%ad %ae %s'
2016-09-03 perezju [Telemetry] Switch ShouldTearDownStateAfterEachStoryRun to True as default

BUG= 640990 

TBR=catapult-sheriff@chromium.org

Review-Url: https://codereview.chromium.org/2307273002
Cr-Commit-Position: refs/heads/master@{#416453}
Commit  : 6b6ec1c01c7dac3ee76f9245e4ee442f1c669c55
Date    : Sat Sep 03 11:54:33 2016


===== TESTED REVISIONS =====
Revision                             Mean     Std Dev  N  Good?
chromium@416451                      176.572  3.49176  5  good
chromium@416452                      181.783  7.05159  5  good
chromium@416452,catapult@4f812c9035  182.735  7.10937  4  good
chromium@416453                      229.052  5.90955  5  bad    <--
chromium@416455                      224.819  3.52956  5  bad

Bisect job ran on: android_nexus5_perf_bisect
Bug ID: 647331

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.gpu_rasterization.polymer
Test Metric: input_event_latency_discrepancy/input_event_latency_discrepancy
Relative Change: 26.02%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/4126
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9001431475321422192


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5832017629937664

| 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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