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Issue 718031 link

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Issue metadata

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



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4.9% regression in thread_times.simple_mobile_sites at 467926:467961

Project Member Reported by mustaq@chromium.org, May 3 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=718031

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg8vu0uAoM


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

android-nexus7v2

=== 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: android_nexus7_perf_bisect
  Benchmark    : thread_times.simple_mobile_sites
  Metric       : thread_GPU_cpu_time_per_frame/thread_GPU_cpu_time_per_frame
  Change       : 10.12% | 2.38480284484 -> 2.5714325312

Suspected Commit Range
  4 commits in range
  https://chromium.googlesource.com/chromium/src/+log/a350792a1dfc14589c29942cb7349f4a5976d7d2..82ecc71c03b9c7a0478849b3df403c1518b05642


Revision             Result                    N
chromium@467925      2.3848 +- 0.249095        14       good
chromium@467926      ---                       ---      build failure
chromium@467927      ---                       ---      build failure
chromium@467928      ---                       ---      build failure
chromium@467929      2.46073 +- 0.131722       14       bad
chromium@467934      2.45099 +- 0.137064       14       bad
chromium@467943      2.45363 +- 0.0840935      6        bad
chromium@467961      2.57143 +- 0.128293       6        bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests thread_times.simple_mobile_sites

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8980604966901833488

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5888235902861312


| 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!
Labels: OS-Linux
Status: WontFix (was: Untriaged)
Too noisy, and have seen many other regressions/improvements since last bisect attempts.

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