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Date:      Thu, 6 May 2010 13:57:38 -0700 (PDT)
From:      Hubert Tournier <hubert@frbsd.org>
To:        freebsd-smp@freebsd.org
Subject:   Re: Disabling HyperThreading?
Message-ID:  <28479447.post@talk.nabble.com>
In-Reply-To: <28467645.post@talk.nabble.com>
References:  <28357071.post@talk.nabble.com> <4BD4727F.4060700@googlemail.com> <28359495.post@talk.nabble.com> <4BD563F7.4010203@googlemail.com> <201004260948.12730.jhb@freebsd.org> <p2yab581e311005050841ob19af115gca86fe06278796a@mail.gmail.com> <28467645.post@talk.nabble.com>

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Hello,


Hubert Tournier wrote:
> 
> I also see in the source code that the default is to enable HT cores:
> static int      hyperthreading_allowed = 1;
> 
> So i will test a custom kernel with this disabled.
> 

Well, it's not enough, i still have my 24 CPUs.

I'll give a try to John's way of disabling CPUs, hoping to avoid disabling
the wrong ones.

Best regards,

Hubert
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