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Issue 821103 link

Starred by 2 users
Status: WontFix
Owner:
f...@opera.com
Closed: Mar 2018
Cc:
jochen@chromium.org
yhirano@chromium.org
domfarolino@gmail.com
f...@opera.com
nzolghadr@chromium.org
wangxianzhu@chromium.org
m...@chromium.org
fmalita@chromium.org
█ y...@yoav.ws
chrishtr@chromium.org
█ x...@chromium.org
vmp...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.4% regression in rasterize_and_record_micro.top_25 at 541469:541564

Project Member Reported by nzolghadr@chromium.org, Mar 12 2018 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Mar 12 2018 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=821103

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7c654d98405838f4c0f2bfc5c2422c8794affb4424d3abc5f226c5d7db5d2a7a


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

android-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 13 2018

Cc: chrishtr@chromium.org fmalita@chromium.org f...@opera.com
Owner: f...@opera.com
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/104b1bda440000

[SPv175][PE] Antialias clips for PaintChunks (and FloatClips) by fs@opera.com
https://chromium.googlesource.com/chromium/src/+/1ca2fa28785179fc17ee17fe88f455ec08373930

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

Comment 4 by f...@opera.com, Mar 13 2018

Cc: y...@yoav.ws x...@chromium.org jochen@chromium.org domfarolino@gmail.com yhirano@chromium.org m...@chromium.org
 Issue 821105  has been merged into this issue.

Comment 5 by f...@opera.com, Mar 13 2018 

 Issue 821106  has been merged into this issue.

Comment 6 by f...@opera.com, Mar 26 2018

Components: Blink>Paint
Status: WontFix (was: Assigned)
Antialiased clips are expected to come with a cost (when they are actually needed, i.e when the clip isn't device-pixel aligned.) The exact cost is difficult to estimate, but I think the numbers here are in that ballpark. (See following note though.)

I'll note that most of the graphs were recovered by (re)enabling SPv175.

Comment 7 by pdr@chromium.org, Mar 26 2018

Cc: wangxianzhu@chromium.org
Labels: SPv175-Progression

Comment 8 Deleted

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