It's because of the hyper-threading ( http://en.wikipedia.org/wiki/Hyper-threading )
On Fri, Jan 7, 2011 at 10:48 AM, Hans-J. Ullrich <[email protected]> wrote: > Hi all, > as Intel says, in my EEEPC 1005HGO the CPU N280 is a singlecore processor. But > the kernel is telling me it has two cores (in linux as in windows as well). > > As I do not trust windows, but is the kernel lying? > > Look here: > > r...@protheus7:/home/ullhan63# cat /proc/cpuinfo > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 28 > model name : Intel(R) Atom(TM) CPU N280 @ 1.66GHz > stepping : 2 > cpu MHz : 1000.000 > cache size : 512 KB > physical id : 0 > siblings : 2 > core id : 0 > cpu cores : 1 > apicid : 0 > initial apicid : 0 > fdiv_bug : no > hlt_bug : no > f00f_bug : no > coma_bug : no > fpu : yes > fpu_exception : yes > cpuid level : 10 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca > cmov > pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc > arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 xtpr > pdcm movbe lahf_lm > bogomips : 3333.74 > clflush size : 64 > cache_alignment : 64 > address sizes : 32 bits physical, 32 bits virtual > power management: > > processor : 1 > vendor_id : GenuineIntel > cpu family : 6 > model : 28 > model name : Intel(R) Atom(TM) CPU N280 @ 1.66GHz > stepping : 2 > cpu MHz : 1000.000 > cache size : 512 KB > physical id : 0 > siblings : 2 > core id : 0 > cpu cores : 1 > apicid : 1 > initial apicid : 1 > fdiv_bug : no > hlt_bug : no > f00f_bug : no > coma_bug : no > fpu : yes > fpu_exception : yes > cpuid level : 10 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca > cmov > pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc > arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 xtpr > pdcm movbe lahf_lm > bogomips : 3332.93 > clflush size : 64 > cache_alignment : 64 > address sizes : 32 bits physical, 32 bits virtual > power management: > > > Who is lying now? Any suggestions? > > > Best regards > > Hans-J. Ullrich > > > > > > > > _______________________________________________ > Debian-eeepc-devel mailing list > [email protected] > http://lists.alioth.debian.org/mailman/listinfo/debian-eeepc-devel > > _______________________________________________ Debian-eeepc-devel mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/debian-eeepc-devel
