Date: Tue, 2 Nov 2004 11:25:15 +0100 From: Ewald Jenisch <a@jenisch.at> To: Luke <luked@pobox.com> Cc: freebsd-questions@freebsd.org Subject: Re: SMP with hyperthreading CPU (5.3)? Message-ID: <20041102102515.GA15710@athena.oekb.co.at> In-Reply-To: <Pine.NEB.4.61.0410301339240.26466@xm.freeshell.org> References: <20041030143217.GA9742@athena.oekb.co.at> <Pine.NEB.4.61.0410301339240.26466@xm.freeshell.org>
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On Sat, Oct 30, 2004 at 01:43:09PM -0700, Luke wrote: > I haven't updated my system since August, but back then the "apic" device > was also required. 5.3 may be different. > This is the relevant section from my 5.2-CURRENT hyperthreading kernel > from last August. > > # To make an SMP kernel, the next two are needed > options SMP # Symmetric MultiProcessor Kernel > device apic # I/O APIC > Sorry, forgot to say, that I've got both of them in my kernel config file, i.e. "SMP" and "apic" - however I don't get the characteristic "CPU... launched" messages upon boot. This brings me to another point: What's the best way (besides checking /var/log/messages) to tell whether SMP is active? Does "top" display cpu load for hyperthreading (as opposed to multiprocessor) systems too? -ewald
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