On Mon, Dec 30, 2002 at 12:27:19AM -0800, John M McIntosh wrote:
> This change set provides a 18 - 28% improvement in the GC logic using  
> an test image that has 1.1 million objects in it on the PowerPC.

Here's a macroBenchmark (on a G3-400 Powerbook):

normal VM:       #(23176 165464 71470 26862  0 23717 14090) 
with GC changes: #(22306 154462 67454 24451  0 21615 14134)  
app. %faster       %3.9 %7.1    %5.9  %9.8     %9.7     0%
                   

Benchmark #2 triggers 10 full collections, it shows nicely how
much faster the GC got:

Benchmark #2: 165464ms
---------------------
	uptime		165.5s
	full			10 totalling 5,920ms (4.0% uptime), avg 592.0ms
	incr		15932 totalling 33,728ms (20.0% uptime), avg 2.0ms
	tenures		1,550 (avg 10 GCs/tenure)

Benchmark #2: 154462ms
---------------------
	uptime		154.5s
	full			10 totalling 4,781ms (3.0% uptime), avg 478.0ms
	incr		16036 totalling 25,407ms (16.0% uptime), avg 2.0ms
	tenures		1,554 (avg 10 GCs/tenure)



-- 
Marcus Denker marcus at ira.uka.de  -- Squeak! http://squeak.de