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Issue 591014 link

Starred by 2 users

Issue metadata

Status: Fixed
Owner: ----
Closed: Aug 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Regression in 2d canvas text benchmark due to AlwaysUseComplexText

Reported by rog...@opera.com, Mar 1 2016

Issue description

Version: Rev 361477 (49.0.2574.0)
OS: Linux

What steps will reproduce the problem?
1. Load attached TC in content_shell
2. Check the result

What is the expected output? What do you see instead?
The benchmark score of the the attached TC dropped 35%, from ~25k to ~16k due to https://codereview.chromium.org/1474673003 ("Turn on the AlwaysUseComplexText runtime feature by default").

The attached TC is extracted from the Mindcat testsuite: http://flashcanvas.net/examples/dl.dropbox.com/u/1865210/mindcat/canvas_perf.html

It can be confirmed by downloading and testing revision 361463 and 361477 from https://commondatastorage.googleapis.com/chromium-browser-continuous.

The performance drop is visible both with and without hardware accelerated canvas enabled.

I don't know the importance of this or if it is expected, but highlighting the regression by this bug report.
 
text_tc.html
1.7 KB View Download

Comment 1 by e...@chromium.org, Mar 4 2016

Cc: drott@chromium.org
Status: Available (was: Untriaged)
Thanks for the report. We have a couple of changes coming that should help recover most of the regression.

Comment 2 by e...@chromium.org, Aug 24 2016

Status: Fixed (was: Available)

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