[Webkit-unassigned] [Bug 11289] New: Canvas with large height uses lots of memory, computer almost stops responding

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=11289

           Summary: Canvas with large height uses lots of memory, computer
                    almost stops responding
           Product: WebKit
           Version: 420+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at opendarwin.org
        ReportedBy: jonathanjohnsson at gmail.com


<canvas height=1000000> makes WebKit use lots of memory. At least on my
computer, that means lots of  paging (swapping(?)) which almost brings the
computer to a halt, beachballing. The mouse starts to move jerky, etc.

WebKit eventually recovers, but it takes some minutes, paging all the time
(~1000 pageins almost every second in top, for example).

I'm not completely sure this should be considered bug, but it might, and at
least now this behaviour is noted and known.


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