hyperthreading CPU and broken scheduling?
dinesh at alphaque.com
Sun Nov 18 20:25:20 PST 2007
On Sun, 18 Nov 2007 12:29:32 +0200, Manolis Kiagias wrote:
> Wojciech Puchar wrote:
> > i have machune with intel's CPU with hyperthreading.
> > it is detected right, but only first thread is ever used.
> > top shows at least 50% idle no matter what i run!
> > what's wrong?
> To enable hyperthreading, try setting the following in /etc/sysctl.conf:
> and reboot (or execute sysctl machdep.hyperthreading_allowed=1 by hand).
would an SMP kernel be required to properly use hyperthreading, or would
just the above sysctl setting be enough ?
Regards, /\_/\ "All dogs go to heaven."
dinesh at alphaque.com (0 0) http://www.openmalaysiablog.com/
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