[Webkit-unassigned] [Bug 36080] Performance degradations when using large javascript files

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=36080





--- Comment #5 from David Leong <david.leong at nokia.com>  2010-03-22 13:35:25 PST ---
Created sunspider version of the test case. (logs attached as well)

In sunspider, all of the javascript code is embedded in html files. In this
case, the CachedScriptSourceProvider class is not involved but
StringSourceProvider is used. Moving the byte order mark checking to the string
source provider also improves the performance of large script files.

Here are the results:

Sunspider baseline, no webkit modifications:
Total:         2107  
3d:            171.4
Access:        64.4
Bitops:        27.2
controlflow:   3.6
crypto:        90.4
date:          451.2  
math:          70.6       
regexp:        23.2
string:        1205.0

Sunspider baseline, with webkit modifications:
Total:         2023.6
3d:            156.0
Access:        59.8
Bitops:        27
controlflow:   3.4
crypto:        86
date:          437.2
math:          70       
regexp:        21.6
string:        1162.6

Sunspider modified with large file, no webkit modifications:
Total:        2580.8  
3d:           299 
Access:       114.2 
Bitops:       50 
controlflow:  14.4 
crypto:       196.8 
date:         496.2 
math:         90       
regexp:       20.8 
string:       1299.4

Sunspider modified with large file, with webkit modifications:
Total:        2059.6 
3d:           162.6 
Access:       61.2 
Bitops:       27.6 
controlflow:  3.2 
crypto:       87.8 
date:         442.8 
math:         72.6        
regexp:       21.8 
string:       1180.0

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