On 19-Jan-07, at 12:20 PM, Aaron Reichow wrote:


>
> is there any way the second core in the CPU is getting used?  I  
> mean, obviously it isn't be used by Squeak through native threads,  
> but would various prims being called be managed by different cores  
> in the CPU, as delegated by Mac OS X? Just curious...

I suspect what is happening is that when running something intensive  
like a benchmark Squeak is getting basically uninterrupted attention  
from one cpu and all the other work is going to the other core. What  
this indicates is that about 30% of all the time on a single core  
machine is being wasted on trivia like running the OS and all the  
rest of the stuff that sits there sucking up cycles.

Now we have a basis for supporting Dan Ingall's old comment about OSs  
and how there shouldn't be one :-)


tim
--
tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
Useful random insult:- Trying out for the javelin retrieval team.