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Issue 727562 link

Starred by 1 user
Status: Duplicate
Merged: issue 725949
Owner: ----
Closed: May 2017
Cc:
toyoshim@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.7%-45% regression in smoothness.top_25_smooth at 473728:473819

Project Member Reported by toyoshim@chromium.org, May 30 2017 
See the link to graphs below.

Comment 1 by toyoshim@chromium.org, May 30 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=727562

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-pmYpAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2ou9mQgM


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

android-nexus5
android-nexus7v2
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 30 2017 


=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : mean_input_event_latency/http___techcrunch.com

Revision             Result                  N
chromium@473727      11.4961 +- 8.13722      21      good
chromium@473818      11.1076 +- 8.33998      21      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 --story-filter=http...techcrunch.com smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978186066268284672

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6299198766448640


| 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!
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, May 30 2017 


=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : mean_input_event_latency/http___techcrunch.com

Revision             Result                  N
chromium@473727      12.3466 +- 8.14671      21      good
chromium@473818      11.16 +- 6.92358        21      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 --story-filter=http...techcrunch.com smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978182100033571536

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6299198766448640


| 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!
Project Member

Comment 7 by 42576172...@developer.gserviceaccount.com, May 31 2017

Mergedinto: 725949
Status: Duplicate (was: Untriaged)

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : sadrul
  Commit : a6251cb3214b42349e7208d285a5e2e01276fe6f
  Date   : Tue May 23 16:06:27 2017
  Subject: input: Dispatch synthesized events at regular intervals.

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : mean_input_event_latency/http___techcrunch.com
  Change       : 69.98% | 10.6063333333 -> 18.029

Revision             Result                  N
chromium@473727      10.6063 +- 2.97264      6      good
chromium@473847      13.0982 +- 4.39382      6      good
chromium@473907      11.7318 +- 2.84858      6      good
chromium@473915      12.6137 +- 4.75252      6      good
chromium@473919      12.667 +- 3.14675       6      good
chromium@473921      12.0987 +- 3.24099      6      good
chromium@473922      18.5313 +- 3.2603       6      bad       <--
chromium@473937      17.2978 +- 2.33782      6      bad
chromium@473967      17.4137 +- 2.10625      6      bad
chromium@474207      18.029 +- 3.65734       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 --story-filter=http...techcrunch.com smoothness.top_25_smooth

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978091188810937440

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5806228837498880


| 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!
►

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