Can I disable HyperThreading in OS?

Andrew P. infofarmer at gmail.com
Sun Oct 2 01:56:01 PDT 2005


On 10/1/05, hshh <hunreal at gmail.com> wrote:
> Hi,
>
> I have a dual XEON smp box. There is option about disable HTT in bios, but
> it can't work. It's still display 4 cpu in my OS.
> Can I disablt HTT in OS directly? I am running FreeBSD 4.11.
>
> Regards.
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Take a look at this advisory:

ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:09.htt.asc

I think you want to upgrade to RELENG_4_11,
or use the workaround.


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