Date: Tue, 10 Mar 2015 17:09:39 +0100 From: "lokadamus@gmx.de" <lokadamus@gmx.de> To: "Pokala, Ravi" <rpokala@panasas.com>, Rui Paulo <rpaulo@me.com> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: detecting hyperthreading Message-ID: <54FF1743.8080205@gmx.de> In-Reply-To: <D1246191.12F7D6%rpokala@panasas.com> References: <D12358C5.12F652%rpokala@panasas.com> <9F2E1411-B517-4BC8-AF61-BB15EE35083C@me.com> <D123957A.12F6CA%rpokala@panasas.com> <54FF1343.1020705@gmx.de> <D1246191.12F7D6%rpokala@panasas.com>
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On 03/10/15 16:56, Pokala, Ravi wrote: > -----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 = "GenuineIntel" Id = 0xf29 Family = 0xf Model = >> 0x2 Stepping = 9 >> >> Features=0xbfebfbff<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=0x4400<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 > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To > unsubscribe, send any mail to > "freebsd-hackers-unsubscribe@freebsd.org" > Well, i don't know, how a new system is showing the following sequence: dmesg | grep FreeBSD/SMP | grep HTT Answer: FreeBSD/SMP: 1 package(s) x 1 core(s) x 2 HTT threads Value $? is zero, but i will not reboot my system to look how it will change, when HTT is disabled. I make a portupgrade and this will need some hour. ;) Greeting
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