Running on only some cores
barney_cordoba at yahoo.com
Tue Jan 20 04:14:41 PST 2009
--- On Tue, 1/20/09, Christoph Mallon <christoph.mallon at gmx.de> wrote:
> From: Christoph Mallon <christoph.mallon at gmx.de>
> Subject: Re: Running on only some cores
> To: barney_cordoba at yahoo.com
> Cc: freebsd-current at freebsd.org
> Date: Tuesday, January 20, 2009, 6:25 AM
> Barney Cordoba schrieb:
> > Can FreeBSD be configured to only run on N cores? So
> for example, if I have an 8 core system, can it be
> configured in loader.conf or through a simple hack to only
> run on 2 cores?
> > We're testing various configs, and its not
> terribly convenient to keep swapping out CPUs.
> man 4 smp
> look for machdep.hlt_cpus
I've tried various settings for this but the system still launches all 4 cpus
all result in 4 cpus being lauched. What is the trick?
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