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Issue 794497 link

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Issue metadata

Status: WontFix
Owner: ----
Closed: Mar 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1.7% regression in smoothness.tough_animation_cases at 522055:522076

Project Member Reported by kraynov@chromium.org, Dec 13 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Dec 13 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=794497

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d4fcc4c106e8bacdc022d0c392465209545e8fb4abfcb88ee51e56b428255671


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

android-nexus7v2
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Dec 13 2017


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

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.tough_animation_cases
  Metric       : frame_times/web_animations_staggered_chaining.html?N_0316

Revision             Result                   N
chromium@522054      17.3593 +- 0.285496      21      good
chromium@522076      17.3626 +- 0.377054      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=web.animations.staggered.chaining.html.N.0316 smoothness.tough_animation_cases

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8960326249290769904


For feedback, file a bug with component Speed>Bisection
Re-kicking bisect with a wider range.
Project Member

Comment 6 by 42576172...@developer.gserviceaccount.com, Jan 22 2018

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/15a821c8840000
Cc: dtu@chromium.org simonhatch@chromium.org
+dtu, simonhatch: Another bisect with no values. What can we do with these?
I *think* this was the gitiles issue, based on the date and that the new jobs should get further.
Project Member

Comment 10 by 42576172...@developer.gserviceaccount.com, Jan 29 2018

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/17cd038a840000
Components: Internals>GPU>Metrics
Status: WontFix (was: Untriaged)
No ref build, and bisects in #3 and #10 didn't reproduce the regression. Not much more we can do to dig in.

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