enabling hyper-threading on intel dual-core
oxy at field.hu
Thu May 11 17:47:38 UTC 2006
thanks a lot for your help!
----- Original Message -----
From: "Shane Ambler" <Shane at 007Marketing.com>
To: "FreeBSD Mailing Lists" <freebsd-performance at freebsd.org>
Sent: Thursday, May 11, 2006 7:34 PM
Subject: Re: enabling hyper-threading on intel dual-core
> On 12/5/2006 1:30, "OxY" <oxy at field.hu> wrote:
>> i just bought an Intel Pentium D-930 (3ghz dual-core)
>> and wonder why i just only have CPU0 and CPU1, when i compile with SMP...
>> sysctl says:
>> machdep.cpu_idle_hlt: 0
>> is it right or i should see CPU 2 and 3 starting during the boot?
>> thanks for your help!
>> ps: i even compiled this option in kernel, can't see any change
>> options MPTABLE_FORCE_HTT # Enable HTT CPUs with the MP
>> freebsd-performance at freebsd.org mailing list
>> To unsubscribe, send any mail to
>> "freebsd-performance-unsubscribe at freebsd.org"
> Sounds right to me - the 930 is a dual core and will show up as two cpu's
> cpu0 and cpu1.
> The early dual core's don't support hyperthreading - the Pentium-D
> edition does (Pentium D-955 at 3.46Ghz is one) and will show up as 4
> Currently at 3x the price.
> Shane Ambler
> Shane at 007Marketing.com
> freebsd-performance at freebsd.org mailing list
> To unsubscribe, send any mail to
> "freebsd-performance-unsubscribe at freebsd.org"
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