Le jeudi 05 janvier 2006 à 11:09 +0100, Erik Mouw a écrit : > On Thu, Jan 05, 2006 at 10:22:51AM +0100, Koen Vermeer wrote: > > On Thu, 2006-01-05 at 17:04 +0800, zzz haha wrote: > > > i have a p4 machine. how can i know if it has em64t? > > > > A somewhat stupid but nevertheless possibly useful suggestion: Try to > > boot the Debian x86-64 installation CD. If it works, you either have an > > em64t or an amd64 processor. Since you state your machine is a p4, you > > may safely rule out the latter possibility. > > > > Alternatively, try to find out what processor is in there, and check the > > Intel website. Maybe there's also a flag in /proc/cpuinfo that indicates > > em64t capabilities. > > The "lm" flag in /proc/cpuinfo tells the CPU can do "long mode", which > means it has the 64 bit extensions. By the way: I need to work on a Xeon machine remotely, and I wondered if it had multiple processors (it is not a dual-core) or simply HyperThreading. How can I distinguish? Here is /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Xeon(TM) CPU 3.00GHz stepping : 1 cpu MHz : 3001.253 cache size : 1024 KB physical id : 0 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : 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 ht tm pbe lm pni monitor ds_cpl cid bogomips : 5947.39
processor : 1 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Xeon(TM) CPU 3.00GHz stepping : 1 cpu MHz : 3001.253 cache size : 1024 KB physical id : 0 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : 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 ht tm pbe lm pni monitor ds_cpl cid bogomips : 5996.54 Thanks > Erik -- Jérôme Warnier FLOSS Consultant http://beeznest.neteb