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Issue 895371 link

Starred by 1 user
Status: WontFix
Owner:
enne@chromium.org
Closed: Jan 9
Cc:
npm@chromium.org
enne@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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3.9%-39.9% regression in rendering.mobile/thread_total_all_cpu_time_per_frame at 599332:599439

Project Member Reported by npm@chromium.org, Oct 15 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Oct 15 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=895371

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=e01ce38308192cf00bd7c35edb67246f02b4b19cd2b3045cd0928d408eeab9c2


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

Android Nexus5X WebView Perf
android-nexus5x-perf

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

Comment 3 by 42576172...@developer.gserviceaccount.com, Oct 15 

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/11de34c6e40000
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, Oct 16 

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/14e3c52ae40000
Project Member

Comment 7 by 42576172...@developer.gserviceaccount.com, Oct 16

Cc: enne@chromium.org
Owner: enne@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/15b0d0eae40000

Reland "Use transfer buffer for small transfer cache entries" by enne@chromium.org
https://chromium.googlesource.com/chromium/src/+/458236cb920e35864c7983b2b7e9c301a29edde9
tasks_per_frame_total_all: 51.54 → 53.58 (+2.048)

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

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

Comment 8 by enne@chromium.org, Jan 9

Status: WontFix (was: Assigned)
Closing out old bugs.  This patch was a huge win on some other tests so a small regression here is fine.  Tasks per frame can sometimes increase when other perf increases.  I'm going to WontFix this.
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