Re: how to tell if my kernel is SMP enabled?

[Scott Lovenberg <scott.lovenberg@xxxxxxxxx>]

Robert P. J. Day wrote:
>   a simple one this time -- how can i tell if my currently-running
> kernel is SMP capable?  i'm guessing that, if i list /proc/cpuinfo and
> more than 1 CPU shows up, that's a dead giveaway.
>
>   but what about on a truly single CPU system?  i can still be running
> an SM kernel, it just wouldn't be obvious.  so how do i tell?  thanks.
>
> rday
>
>
> ========================================================================
> Robert P. J. Day
> Linux Consulting, Training and Annoying Kernel Pedantry:
>     Have classroom, will lecture.
>
> http://crashcourse.ca                          Waterloo, Ontario, CANADA
> ========================================================================
>
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>
>   
Are you running an upstream kernel, or a custom compiled kernel?

If you rolled your own from source, you can tell if you do a make 
xconfig (or make menuconfig, if you're of the curses persuasion) in 
/usr/src/linux (or where ever you untarred it).  If it's a vendor 
provided kernel, SMP compiled kernels almost always have a -smp- in the 
name.  Try 'uname -a' or 'uname -r' to see the kernel info.  FWIW, 
running an SMP kernel on a single core box is ok, but you'll not want to 
run a kernel compiled for single core on a multicore platform.  Intel 
HyperThreading CPUs are considered SMP, IIRC.  HTH.

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