Bug 16709 - WebSite snow effect is *ridiculously* slow on a 30" display
Summary: WebSite snow effect is *ridiculously* slow on a 30" display
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: New Bugs (show other bugs)
Version: 528+ (Nightly build)
Hardware: Mac OS X 10.4
: P2 Normal
Assignee: Nobody
URL: http://www.parunclub.com/welcome.htm
Keywords:
Depends on:
Blocks:
 
Reported: 2008-01-02 07:18 PST by Eric Seidel (no email)
Modified: 2009-12-02 15:31 PST (History)
2 users (show)

See Also:

Attachments
web archive (376.03 KB, application/x-webarchive)
2008-01-02 07:19 PST, Eric Seidel (no email) 		no flags Details
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Description Eric Seidel (no email) 2008-01-02 07:18:57 PST 
WebSite snow effect is *ridiculously* slow on a 30" display

http://www.parunclub.com/welcome.htm

We'll probably have to grab a copy of the site before it disappears.
Comment 1 Eric Seidel (no email) 2008-01-02 07:19:42 PST 
Created attachment 18237 [details]
web archive
Comment 2 Mark Rowe (bdash) 2008-01-02 07:30:36 PST 
I'm seeing terrible things happening on a 17" MBP with a largish window.  Looks like it runs at around one frame every few seconds.  Shark's "System Trace" shows that a huge amount of time is spent in VM faults and system calls.  The system calls are primary mmap/munmap/vm_allocate/vm_copy, called as a result of a "realloc" below -[NSView setNeedsDisplayInRect:], called from ScrollView::updateContents.  The VM faults are primarily zero fills of the results of these allocations.  The VM faults and system calls account for around 35% of Safari's CPU time during a 10 second sample of the system!
Comment 3 Alexey Proskuryakov 2009-12-02 15:31:18 PST 
Works fine with a 24" screen for me (Safari 4.0.4, Mac OS X 10.6.2).