cpu 32 or 64 bit

rjnlinux · 08-13-2012, 03:52 PM

I am trying to find out if my cpu can handle 64 bit Linux operating system

uname -a

Linux prod-db.jha.org 2.6.5-7.244-bigsmp #1 SMP Mon Dec 12 18:32:25 UTC 2005 i686 i686 i386 GNU/Linux

cat /proc/cpuinfo

processor : 7
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Xeon(TM) MP CPU 3.00GHz
stepping : 1
cpu MHz : 3001.693
cache size : 1024 KB
physical id : 7
siblings : 2
core id : 7
cpu cores : 1
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 nx lm pni monitor ds_cpl tm2 est cid
bogomips : 5996.54

Any ideas ?

rknichols · 08-13-2012, 03:57 PM

The presence of the "lm" (Long Mode) flag says yes, it is a 64-bit cpu.

cortman · 08-13-2012, 03:57 PM

Run

Code:

grep flags /proc/cpuinfo

If "lm" (lowercase L) is in the return, it's 64 bit. If "pm" it's 32.

EDIT: Missed in the OP!

rjnlinux · 08-13-2012, 05:06 PM

Thanks all

Tinkster · 08-13-2012, 06:15 PM

While the question has been answered ...

Code:

awk '$1 ~ /flags/ && $0 ~ / lm / {print "64-bit CPU"}' /proc/cpuinfo

;)