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Date:      Wed, 18 Jan 2006 00:24:36 -0500
From:      Kris Kennaway <kris@obsecurity.org>
To:        John Baldwin <jhb@freebsd.org>
Cc:        freebsd-sparc64@freebsd.org
Subject:   Re: Command to start and stop a cpu
Message-ID:  <20060118052436.GA98676@xor.obsecurity.org>
In-Reply-To: <200601171314.05251.jhb@freebsd.org>
References:  <20060116185354.GA22674@SDF.LONESTAR.ORG> <200601171206.48133.jhb@freebsd.org> <84dead720601170928r567711d3t31cd297acb755989@mail.gmail.com> <200601171314.05251.jhb@freebsd.org>

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On Tue, Jan 17, 2006 at 01:14:03PM -0500, John Baldwin wrote:
> On Tuesday 17 January 2006 12:28, Joseph Koshy wrote:
> > > I think that is x86-only though.  I don't think there is
> > > support for that on sparc64.
> >
> > SCHED_4BSD uses hlt_cpus_mask.
>=20
> Yes, but only i386 and amd64 actually set it and use it to keep CPUs idle:

I'd love a way to halt/disable CPUs on sparc64, because then I could
run comparative benchmarks with 1-14 cpus enabled to test scaling.

Kris

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