New issue
Advanced search Search tips
Note: Color blocks (like █ or █) mean that a user may not be available. Tooltip shows the reason.

Issue 728312 link

Starred by 1 user
Status: Duplicate
Owner: ----
Closed: Jun 2017
Cc:
█ jasontiller@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



Sign in to add a comment

8.1%-9.2% regression in loading.desktop at 475284:475345

Project Member Reported by jasontiller@chromium.org, May 31 2017 
Appears to be a land/revert pattern, but spread out over two weeks. May be expected, but kicking off a bisect just in case.

Comment 1 by jasontiller@chromium.org, May 31 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=728312

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxsjDvgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxrLnrwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxrLnrwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDghvKl5wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgxqjhpAsM


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

chromium-rel-win7-dual
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jun 1 2017 


=== BISECT JOB RESULTS ===
Bisect failed for unknown reasons

Please contact the team (see below) and report the error.


Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : loading.desktop
  Metric       : cpuTimeToFirstMeaningfulPaint_avg/pcv1-warm/ru.wikipedia


To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=ru.wikipedia loading.desktop

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978051640030850688

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6705328432873472


| 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, Jun 1 2017 


=== BISECT JOB RESULTS ===
Bisect failed for unknown reasons

Please contact the team (see below) and report the error.


Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : loading.desktop
  Metric       : cpuTimeToFirstMeaningfulPaint_avg/pcv1-warm/ru.wikipedia


To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=ru.wikipedia loading.desktop

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978027333780136000

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6705328432873472


| 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!

Comment 7 by simonhatch@chromium.org, Jun 2 2017 

Bisects were failing due to  crbug.com/728594 , restarting this.
Project Member

Comment 8 by 42576172...@developer.gserviceaccount.com, Jun 2 2017

Mergedinto: 728379
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : nainar
  Commit : cc275c99719dca651110ad31085c6401de79056a
  Date   : Mon May 29 09:07:31 2017
  Subject: Disable style sharing outside tests.

Bisect Details
  Configuration: win_x64_perf_bisect
  Benchmark    : loading.desktop
  Metric       : cpuTimeToFirstMeaningfulPaint_avg/pcv1-warm/ru.wikipedia
  Change       : 9.48% | 97.693 -> 106.9505

Revision             Result                   N
chromium@475292      97.693 +- 1.31326        6      good
chromium@475316      97.5863 +- 0.98537       6      good
chromium@475317      107.725 +- 3.38569       6      bad       <--
chromium@475318      107.652 +- 2.71388       6      bad
chromium@475319      107.27 +- 1.55701        6      bad
chromium@475322      107.742 +- 0.605903      6      bad
chromium@475328      106.506 +- 0.671113      6      bad
chromium@475339      106.95 +- 0.808361       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=ru.wikipedia loading.desktop

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977939604198651280

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6675282343231488


| 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!
►

Sign in to add a comment