/proc/cpuinfo flags for HyperThreading and 64bit capability
Dave Jones
davej at redhat.com
Tue Mar 21 08:56:40 UTC 2006
On Tue, Mar 21, 2006 at 12:44:57AM -0800, Robinson Tiemuqinke wrote:
> [root at testnode01 ~]# cat /proc/cpuinfo | grep flags
> 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 xtpr
>
> In the above output, does "ht" means hyperthreading?
Yes, but also the 'siblings' field is relevant.
It's possible to have a ht CPU with no siblings. (Ie, only shows up
as single CPU)
> and "lm" means "64bit capability"?
correct.
Dave
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