Re: HELP: Number of CPU cores is not right

[Camaleón <noelamac@gmail.com>]

On Fri, 17 Jun 2011 20:49:41 +0200, Armin Kneip wrote:

>> The computer OS running has 48-core CPU, but the OS now only can
>> recognize 32-core of CPU.
>> The kernel version is 2.6.26-2-amd64.
> 
> The current Debian kernel supports only 32 cpu's. Set CONFIG_NR_CPUS to
> 48 or higher and recompile your kernel.

True! :-o

sm01@stt008:~$ grep -i nr_cpus /boot/config-2.6.26-2-amd64
CONFIG_NR_CPUS=32

Where is that limit coming from? It must be a rationale for doing it so.

(searching...)

Ah, found this thread:

Debian stock kernel config -- CONFIG_NR_CPUS=32?
http://lists.debian.org/debian-user/2010/10/msg01391.html

Oops, no rationale then :-)

Greetings,

-- 
Camaleón