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Issue metadata

Status: WontFix
Owner: ----
Closed: Jul 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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26.2%-266% regression in smoothness.top_25_smooth at 424533:424590

Project Member Reported by lanwei@chromium.org, Oct 13 2016

Issue description

See the link to graphs below.
 

Comment 3 by lanwei@chromium.org, Oct 13 2016

Cc: -lanwei@google.com lanwei@chromium.org
Project Member

Comment 4 by 42576172...@developer.gserviceaccount.com, Oct 13 2016


===== 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@424532  38.4195  16.8023  18  good
chromium@424590  55.8365  80.9172  18  bad

Bisect job ran on: android_nexus5_perf_bisect
Bug ID: 655663

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests smoothness.top_25_smooth
Test Metric: mean_input_event_latency/https___plus.google.com_110031535020051778989_posts
Relative Change: 17.43%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/4239
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8998903933115081392


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5796393266970624

| 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!
Project Member

Comment 6 by 42576172...@developer.gserviceaccount.com, Oct 26 2016

Bisect failed: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/4295
Failure reason: the build has failed.
Additional errors:
The metric was not found in the test output.
Either of the initial "good" or "bad" revisions failed to be tested or built.

Project Member

Comment 8 by 42576172...@developer.gserviceaccount.com, Oct 27 2016

Bisect failed: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/4299
Failure reason: the build has failed.
Additional errors:
The metric was not found in the test output.
Either of the initial "good" or "bad" revisions failed to be tested or built.

Project Member

Comment 10 by 42576172...@developer.gserviceaccount.com, Dec 17 2016


===== 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@424532  78.579   72.0343  21  good
chromium@424590  78.8182  49.8827  21  bad

Bisect job ran on: android_nexus5_perf_bisect
Bug ID: 655663

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=https...plus.google.com.110031535020051778989.posts smoothness.top_25_smooth
Test Metric: percentage_smooth/https___plus.google.com_110031535020051778989_posts
Relative Change: 0.30%

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/4469
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8993073141508762560


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5844899423846400

| 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!
Project Member

Comment 12 by 42576172...@developer.gserviceaccount.com, Apr 11 2017

Bisect failed: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/4861
Failure reason: the build has failed due to infrastructure failure.

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

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