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Date:      Thu, 26 Feb 2004 09:49:29 +0000
From:      Philip Reynolds <philip.reynolds@rfc-networks.ie>
To:        freebsd-hackers@freebsd.org
Subject:   Re: Questions about CPU related sysctls
Message-ID:  <20040226094929.GA73840@rfc-networks.ie>
In-Reply-To: <20040225214618.GA60156@crodrigues.org>
References:  <20040225214618.GA60156@crodrigues.org>

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Craig Rodrigues <rodrigc@crodrigues.org> 27 lines of wisdom included:
> What is the difference between these two sysctls?
>=20
> kern.smp.cpus: Number of CPUs online
> hw.ncpu: Number of active CPUs

These two are exactly the same thing from the little SMP I have done
with FreeBSD. I would use hw.ncpu, as kern.smp.cpus only appears
when SMP is compiled into the kernel, IIRC.

> Also, can someone give a brief description of these sysctls (sysctl -d
> doesn't show anything for them).
>=20
> Would it be a good idea to add some text to these syctls?
>=20
> kern.ccpu:
> hw.acpi.cpu.cx_history:
> machdep.hlt_cpus:

This has come up before, feel free to submit something!=20

--=20
Philip Reynolds                      | RFC Networks Ltd.
philip.reynolds@rfc-networks.ie      | +353 (0)1 8832063
http://people.rfc-networks.ie/~phil/ | www.rfc-networks.ie

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