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Issue 898907 link

Starred by 1 user
Status: Assigned
Owner:
nzolghadr@chromium.org
Cc:
nzolghadr@chromium.org
maxlg@chromium.org
tdres...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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3.5%-83.7% regression in rendering.mobile/tasks_per_frame_total_all at 601213:601297

Project Member Reported by maxlg@chromium.org, Oct 25 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Oct 25 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=898907

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2f98100cf0509c6930d268c1350ac1b7e32afec0086e62bf9fa8029b341c79c1


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

Android Nexus5 Perf
android-nexus5x-perf

rendering.mobile - Benchmark documentation link:
  https://bit.ly/rendering-benchmarks
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Oct 25 

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/141eb9cee40000
Project Member

Comment 6 by 42576172...@developer.gserviceaccount.com, Nov 20

Cc: nzolghadr@chromium.org
Owner: nzolghadr@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/166be5ebe40000

Remove input metric ukm sampling by nzolghadr@chromium.org
https://chromium.googlesource.com/chromium/src/+/f509a32b60352f85ed29950b1a24752ad14ce35e
tasks_per_frame_total_all: 37.8 → 40.29 (+2.486)

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

Benchmark documentation link:
  https://bit.ly/rendering-benchmarks
Project Member

Comment 7 by 42576172...@developer.gserviceaccount.com, Nov 20 

📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/129c7700140000

Remove input metric ukm sampling by nzolghadr@chromium.org
https://chromium.googlesource.com/chromium/src/+/f509a32b60352f85ed29950b1a24752ad14ce35e
tasks_per_frame_total_all: 37.87 → 40.22 (+2.345)

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

Benchmark documentation link:
  https://bit.ly/rendering-benchmarks

Comment 8 by maxlg@chromium.org, Nov 21 

nzolghadr@, the bisect points to your change, could you take a look?

Comment 9 by nzolghadr@chromium.org, Nov 21

Cc: tdres...@chromium.org
Tim, do you think this is the effect of us reporting UKM for input metrics? Does that have that much overload?

Comment 10 by tdres...@chromium.org, Nov 21 

It's possible. Might be worth an independent couple of perf tryjobs?
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