Check if you have a CPU with Hyperthreading. On Windows, that behaves 
like a dual-core machine, so 50% CPU is simply the max you get for any 
single thread.

Cheers,
   - Andreas

Sam Livingston-Gray wrote:
> Hello, all-
> 
> I've written a relatively long-running search program (started it 
> yesterday afternoon, and it was still chugging away when I left the 
> house this morning).  I can leave it going indefinitely on my desktop 
> PC, but I noticed in the task manager that the Squeak process was using 
> exactly 50% of available CPU.  This remains the same regardless of 
> whether the VM preference for "reduce CPU usage" is checked.  In the 
> image itself, the "higherPerformance" preference is checked.
> 
> (This is under Squeak 3.9 on a WinXP machine.  If I remember correctly, 
> the CPU itself is one of the vintage 2005 hyperthreading Intel chips.)
> 
> Is there a way to tell the VM to hog the CPU?  Failing that, would there 
> be any significant reason *not* to start a second Squeak session to run 
> another such job at the same time?  (=
> 
> Thanks,
> -Sam Livingston-Gray
>  comp.sci. senior, Portland State University
> 
> 
>