Date: 17 Mar 2011 22:13:36 -0000 From: John Levine <johnl@iecc.com> To: freebsd-questions@freebsd.org Cc: freebsd@t41t.com Subject: Re: How to tell whether CPU supports x64? Message-ID: <20110317221336.77754.qmail@joyce.lan> In-Reply-To: <20110317213336.GF10069@ece.pdx.edu>
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>I have a remote server, and I'd like to know if it will support >64-bit instructions. Is there some way I can tell? It's running 32-bit >FreeBSD right now. > >>From dmesg.boot: > Timecounter "i8254" frequency 1193182 Hz quality 0 > CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2387.76-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,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > Features2=0x4400<CNTX-ID,<b14>> > Logical CPUs per core: 2 > real memory = 1073676288 (1023 MB) > avail memory = 1041502208 (993 MB) > ACPI APIC Table: <DELL PE1750 > > FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs > cpu0 (BSP): APIC ID: 0 > cpu1 (AP): APIC ID: 1 Looking at the Intel web site, the only Xeon I see that runs at 2.4GHz and has two cores with two threads is the Xeon 3060, which does indeed provide the 64 bit instruction set. http://ark.intel.com/Product.aspx?id=27205&processor=3060&spec-codes=SL9TZ,SL9ZH,SLACD
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