Date: Tue, 10 Mar 2015 15:56:12 +0000 From: "Pokala, Ravi" <rpokala@panasas.com> To: "lokadamus@gmx.de" <lokadamus@gmx.de>, Rui Paulo <rpaulo@me.com> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: detecting hyperthreading Message-ID: <D1246191.12F7D6%rpokala@panasas.com> In-Reply-To: <54FF1343.1020705@gmx.de> References: <D12358C5.12F652%rpokala@panasas.com> <9F2E1411-B517-4BC8-AF61-BB15EE35083C@me.com> <D123957A.12F6CA%rpokala@panasas.com> <54FF1343.1020705@gmx.de>
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-----Original Message----- From: "lokadamus@gmx.de" <lokadamus@gmx.de> Date: 2015-03-10, Tuesday at 08:52 To: Ravi Pokala <rpokala@panasas.com>, Rui Paulo <rpaulo@me.com> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: detecting hyperthreading >Have you look at dmesg? >My system is a P4 with HTT. >dmesg |more [...] >CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (3000.00-MHz 686-class CPU) > Origin =3D "GenuineIntel" Id =3D 0xf29 Family =3D 0xf Model =3D 0x2 >Stepping =3D 9 > >Features=3D0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE= ,M >CA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > Features2=3D0x4400<CNXT-ID,xTPR> Of course. :-) But there are two problems: (1) That just tells me HTT is supported by the CPU, not that if kernel is using it. (2) It's difficult to parse. Of the two, (1) is the bigger concern for my use-case. Thanks, Ravi
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