Date: Mon, 15 Nov 2004 21:11:55 -0700 From: Scott Long <scottl@freebsd.org> To: "Wilkinson, Alex" <alex.wilkinson@dsto.defence.gov.au> Cc: freebsd-current@freebsd.org Subject: Re: Detection of HTT Message-ID: <41997E0B.6030604@freebsd.org> In-Reply-To: <20041116022926.GB57056@squash.dsto.defence.gov.au> References: <200411160308.10451.michaelnottebrock@gmx.net> <20041116022926.GB57056@squash.dsto.defence.gov.au>
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Intel is claiming that your CPU has the registers that will let software easily find out how many logical cores you have. Scott Wilkinson, Alex wrote: > Yes you're right ! This sux ! What the hell is Intel claiming that I have a > HTT capable CPU, but really I have only 1 core ! > > > shell> sudo x86info -f > > x86info v1.12b. Dave Jones 2001-2003 > Feedback to <davej@redhat.com>. > > Found 1 CPU > -------------------------------------------------------------------------- > Family: 15 Model: 2 Stepping: 9 Type: 0 Brand: 9 > CPU Model: Pentium 4 (Northwood) [D1] Original OEM > Processor name string: Intel(R) Pentium(R) 4 CPU 2.80GHz > > Feature flags: > fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 > clflsh dtes acpi mmx fxsr sse sse2 selfsnoop ht acc pbe > Extended feature flags: > cntx-id > Instruction TLB: 4K, 2MB or 4MB pages, fully associative, 128 entries. > Data TLB: 4KB or 4MB pages, fully associative, 64 entries. > L1 Data cache: > Size: 8KB Sectored, 4-way associative. > line size=64 bytes. > No level 2 cache or no level 3 cache if valid 2nd level cache. > Instruction trace cache: > Size: 12K uOps 8-way associative. > L2 unified cache: > Size: 512KB Sectored, 8-way associative. > line size=64 bytes. > Number of logical processors supported within the physical package: 0 > > - aW > > > 0n Tue, Nov 16, 2004 at 12:38:05PM +1030, Michael Nottebrock wrote: > > On Tuesday, 16. November 2004 02:41, Wilkinson, Alex wrote: > > Is it possible to find out whether HTT is turned on in the BIOS > without > > having to reboot ? acpidump(8) ? > > > > It's just that I notice that I have a HTT capable CPU: > > > > CPU: Intel(R) Pentium(R) 4 CPU 2.80GHz (2793.19-MHz 686-class CPU) > > Origin = "GenuineIntel" Id = 0xf29 Stepping = 9 > > > > > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE > ,MC > >A,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS, HTT,TM,PBE> > > Not all CPUs that advertise 'HTT' do actually offer multiple logical > processors. sysutils/x86info is a nice utility which can provide this > information ... > > -- > ,_, | Michael Nottebrock | lofi@freebsd.org > (/^ ^\) | FreeBSD - The Power to Serve | http://www.freebsd.org > \u/ | K Desktop Environment on FreeBSD | http://freebsd.kde.org > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
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