Detecting Multi CPUs

jdreg · 02-02-2002, 03:41 PM

Trying to move from Windows to Linux - just because :-). I purchased a box for Linux with a dual processor board and installed RedHat 7.1. Purchased second processor and installed. BIOS seems to recognize second processor as it gives temperture for both. When I boot into Linux it runs well but I don't know how to ascertain if the OS is "seeing" both processors. I think that I might have to recompile the kernal :-/ but don't have a clue as what all is involved.

Jdr

DavidPhillips · 02-02-2002, 03:44 PM

I believe it is supported on the default kernel

try this

cat /proc/cpuinfo

jdreg · 02-02-2002, 03:56 PM

Thanks, it returned the following:

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 10
cpu MHz : 933.402
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 3
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 mmx fxsr sse
bogomips : 1861.22

Best I can tell the OS only "sees" the first one :-/. Suggestions are welcome :-).

Jdr

Aussie · 02-02-2002, 04:47 PM

If you installed redhat before you installed the second CPU then you will have a uniprocessor kernel installed, try either installing redhat again with both processors installed or compiling a new kernel with SMP support.

jdreg · 02-02-2002, 04:54 PM

Thanks, that make sense. Do you know if I will lose everything and have to re-build or if the installation will just update my system. If it will just update I was going to download the RedHat 7.2 version and try out the new file system . . . Jdr

Aussie · 02-02-2002, 05:01 PM

I'd go with RH7.2 update, back up your data first, in case you have to do a fresh install to get the smp working.

jdreg · 02-02-2002, 05:07 PM

Thanks for your help. I am very much a Linux newbie with a "million" questions. It's great to find a place that helps. . . Jdr

Aussie · 02-03-2002, 03:56 AM

Your welcome jdr. Ask away