cpu

[Chakravarthi]

Hi,

i'm using a IBM server with two processors,, BIOS shows two processors, but in /proc/cpuinfo i find only one processor,,

how to i add other processor,,,

any help

[Bruno Vidal · Accepted solution]

Hi,
You probably use a Uniprocessor kernel. You have two solution:
-or you use a well known distribution, and you should have somewhere on cd an MP kernel.
-or you are well aware of linux, and the best is to recompile yourself a kernel by adding MP option.

In order to verify this, do:
#uname -v
For my system:
# uname -v
#20 SMP Mon May 5 13:07:38 CEST 2003

-> it is an SMP kernel, so it support multiple CPU.

Cheers.

[Balaji N]

hi


what is the linux distro u r using.

if it is redhat, it comes with an rpm for the kernel. it should be something which contaisn the word smp(symmetric mutli(ple) processing).

or download the kernel source and recompile it from scratch enabling the smp option.
-balaji

[Chakravarthi]

Hi,

How do i recompile the kernel, with old configuraion

i guess make oldconfig then make menuconfig then ?

chakri

[Bruno Vidal]

Hi,
No, make oldconfig try to create a new .config file from one you have already (when upgrading you source tree for example).
Normally, when using distrib, you have at the same time, the .config file that has been used to create your actual kernel. So starting only by using make menuconfig should be enought (but check before that you have a .config file that is correct). But if download the latest source tree, you must then put in this tree the .config of your distrib, and then use make oldconfig.

Cheers.

[Caesar_3]

Hello!

You need to compile kernel with suport in
multi processor so compile it.
For compile flow check
/usr/src/linux-/README

Caesar