[RFI]Mac performance gap between OS-9 and OSX

Karsten Wolf karstenw at eichhorn-frankfurt.de
Tue Aug 5 15:13:49 UTC 2003


Hi,

has anybody investigated the BitBlt performance difference in 
line-drawing between OS-9 and OSX?

For (an extreme) example:

TimeProfileBrowser onBlock: [
	Display fillWhite.
	1 to: 4 do: [:i | Pen new color: i; turn: 90*i; dragon: 14]]

results on my machine (PBG4 886MHz):

	OS9: 6.7s
	OSX: 455s

	OSX CocoaSqueak: 479s

Tested with various VMs up to 3.5.2b1.

OS9 is nearly 70 times faster than OSX...

It gets weirder when you just run the "Squeak 3.5.2b1 Classic" (taken 
out of the package) in the Classic environment. It has nearly the same 
fast timing as when started under OS9 even though a restore Display in 
that environment takes nearly 2s!

Any ideas?

karsten



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