Date: Tue, 14 Nov 2006 16:13:54 -0800 From: "Jeff Mohler" <speedtoys.racing@gmail.com> To: "Juha Saarinen" <juhasaarinen@gmail.com> Cc: Robert Fitzpatrick <lists@webtent.net>, FreeBSD <freebsd-questions@freebsd.org> Subject: Re: Dual core processors Message-ID: <a969fbd10611141613n1f0c562emcae8a279fe38bc68@mail.gmail.com> In-Reply-To: <b34be8420611141602n657e83fah6f965a3d9ddf600@mail.gmail.com> References: <1163545085.492.20.camel@columbus.webtent.org> <8cb6106e0611141504sa4fbe00q8aeda6f869422d26@mail.gmail.com> <1163548016.492.26.camel@columbus.webtent.org> <b34be8420611141602n657e83fah6f965a3d9ddf600@mail.gmail.com>
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My dmesg matches yours Juha.. Would enabling Hyperthreading increase any of my processing power? On 11/14/06, Juha Saarinen <juhasaarinen@gmail.com> wrote: > On 11/15/06, Robert Fitzpatrick <lists@webtent.net> wrote: > > Looks like my hyperthreading is enabled and it is in the BIOS. I was > > told there was a dual-core in the machine, but not confirmed. But there > > should be two with HT anyway as seen, correct? > > This is a dmesg from an Intel D830 box: > > CPU: Genuine Intel(R) CPU 3.20GHz (3217.43-MHz 686-class CPU) > Origin = "GenuineIntel" Id = 0xf47 Stepping = 7 > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,P > SE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > Features2=0x649d<SSE3,RSVD2,MON,DS_CPL,EST,CNTX-ID,CX16,<b14>> > AMD Features=0x20100000<NX,LM> > AMD Features2=0x1<LAHF> > Cores per package: 2 > > I think you do have a single processor with hyperthreading (logical > CPUs) and not a dual-core model. > > To get hyperthreading up and running, you need to add: > > machdep.hyperthreading_allowed=1 > > to /etc/sysctl.conf or change it manually. Please google for the > security implications of doing this first though. > > > -- > Juha > http://www.geekzone.co.nz/juha > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >
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