[Webkit-unassigned] [Bug 32122] [Qt] Preparation for tiling support

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=32122





--- Comment #7 from Kenneth Rohde Christiansen <kenneth at webkit.org>  2009-12-03 10:11:17 PST ---
Benjamin did a simple test (can you upload it Benjamin?) that automatically
scrolls on offline webpages.

Here are the preliminary results:

QWebView (not tiles, xcopyregion):

RESULT : Test::benchWebView():"simplest painting":              
     2.1 msec per iteration (total: 35, iterations: 16)          
RESULT : Test::benchWebView():"slashdot page":                  
     16 msec per iteration (total: 33, iterations: 2)            
RESULT : Test::benchWebView():"amazon book page":                
     12 msec per iteration (total: 24, iterations: 2)            
RESULT : Test::benchWebView():"wikipedia Qt page":              
     12 msec per iteration (total: 24, iterations: 2)            

QGraphicsWebView (no tiling, should fall back to x copy region as it uses
GraphicsView infrastructure for scrolling):

RESULT : Test::benchGraphicsWebView():"simplest painting":      
     8.8 msec per iteration (total: 71, iterations: 8)          
RESULT : Test::benchGraphicsWebView():"slashdot page":          
     100 msec per iteration (total: 100, iterations: 1)          
RESULT : Test::benchGraphicsWebView():"amazon book page":        
     88 msec per iteration (total: 88, iterations: 1)            
RESULT : Test::benchGraphicsWebView():"wikipedia Qt page":      
     137 msec per iteration (total: 137, iterations: 1)           

QGraphicsWebView (with my above tiling patch):

RESULT : Test::benchGraphicsWebView():"simplest painting":
     2.6 msec per iteration (total: 42, iterations: 16)
RESULT : Test::benchGraphicsWebView():"slashdot page":
     1.2 msec per iteration (total: 41, iterations: 32)
RESULT : Test::benchGraphicsWebView():"amazon book page":
     0.71 msec per iteration (total: 23, iterations: 32)
RESULT : Test::benchGraphicsWebView():"wikipedia Qt page":
     0.84 msec per iteration (total: 27, iterations: 32)

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