On Tue, Mar 04, 2003 at 08:27:21PM -0600, Imtiaz, Fazle wrote:
> I run a very high traffic web site with FreeBSD 4.7 and am considering
> moving into Dual Xeon based platform. Does FreeBSD 4.7 support
> hyper threading and if it does, are there any known issues and problems
> with it? My system is already SMP enabled, does anything special need
> to be done?
4.7 supports hyperthreading only if the BIOS includes the virtual
CPUs in the MP table. Some BIOSes do this, and others do not.
4.8-PRERELEASE will always enable hyperthreading if the processors
are capable of it. 4.8-RELEASE will probably make this a kernel
option, so people who don't want hyperthreading can turn it off.
John Balwdin is finalising the details of the option at the moment.
David.
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