Re: Detecting unused CPUs on Linux

[Frank Smith]

--On Tuesday, October 12, 2004 17:18:04 -0500 Chip Seraphine <chip@trdlnk.com> 
wrote:

> 
> I'm working on some lilo-management stuff and I would like to be able to 
> detect SMP machines under Linux (Mandrake).  No problem at all if the machine 
> is already running an SMP kernel-- I can just count the CPUs in /proc/
> cpuinfo, among other ways.  
> 
> Unfortunately, it's a bit tougher if the box is running a uniprocessor 
> kernel.  
> On some systems, I can search the dmesg for the string NR_CPUs (which appears 
> only in an "unused processsors" warning) to know that I have some unused 
> CPUs, but that isn't always present in the dmesg (seems to appear on my 
> PowerEdges but not my Dimensions, not sure why...).  
> 
> Anybody else know of any automated way of telling if I am dragging a CPU?

Try lshw or dmidecode. They'll even tell you the motherboard model. Don't
know if either one is included in the Mandrake distro.

Frank

> 
> -- 
> 
> Chip Seraphine
> Unix Administrator
> TradeLink, LLC
> 312-264-2048
> chip@trdlnk.com
> 
> 
> 
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-- 
Frank Smith                                      fsmith@hoovers.com
Sr. Systems Administrator                       Voice: 512-374-4673
Hoover's Online                                   Fax: 512-374-4501