Bug 143447

Summary: Chalkboard is very slow on Mac-Book-Pro relative to Mac when running with the same window size
Product: WebKit Reporter: Said Abou-Hallawa <sabouhallawa>
Component: SVGAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: webkit-bug-importer, zimmermann
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Mac profile
none
iMacBook profiling none

Said Abou-Hallawa
Reported 2015-04-06 11:16:40 PDT
On Mac Safari: takes 7.27 seconds. Chrome: takes 21.13 seconds. On iMacBook Safari: takes 76.77 seconds. Chrome: takes 46.97 seconds. There should be something related to the CG on iMac-Book and how it measures/renders graphical items on the screen.
Attachments
Mac profile (692.29 KB, application/zip)
2015-04-06 11:18 PDT, Said Abou-Hallawa 		no flags
Details
iMacBook profiling (749.38 KB, application/zip)
2015-04-06 11:23 PDT, Said Abou-Hallawa 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Said Abou-Hallawa
Comment 1 2015-04-06 11:18:03 PDT
Created attachment 250211 [details] Mac profile Profling results from the Mac machine with window size 1920x1070.
Said Abou-Hallawa
Comment 2 2015-04-06 11:23:45 PDT
Created attachment 250213 [details] iMacBook profiling Profiling results from the iMacBook machine with window size 1920-1090.
Radar WebKit Bug Importer
Comment 3 2015-04-06 11:25:19 PDT
<rdar://problem/20436152>
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