Validate SMP?

Eric Miller etmilleretmiller at yahoo.com
Thu Feb 6 19:15:38 PST 2003


thanks, thats what I was looking for.  I tried using
makeopts j3 during my build, and I didn't notice any
difference.

Ill try that! ( I think it might be quicker just to
pull a processor out than to rebuild the kernl)

--- torsten <torsten at inetw.net> wrote:
> On Thu the 06 Feb 2003 at 18 hours EST
> EM wrote...
> >I have SMP enabled in my kernel config, but how can
> I
> >tell if the system is taking advantage of SMP?  is
> >there a cat /proc/tellmeifmyshitsworking or
> soemthing
> >like that?
> >
> >Are there any SMP tools (packages with SMP
> commands)
> 
> 
> Reboot.  If there are two penguins, there are two
> procs.
> 
> But more seriously, you can make the kernel tree.  I
> once had a dual-1333Mhz Athlon setup, and adding the
> 
> second processor sped up make times by about 80%.
> 
> time make -j3 bzImage
> 
> the -j option specifies the number of compile jobs
> to
> run simultaneously, 3 is a good number for two procs
> - it
> makes sure that there is at least one gcc per proc.
> 
> the time command tells you the total time 
> (user, system, total) for the make.  Compare
> times for one, two procs (may require recompiling
> the
> kernel for uniprocessor).
> 
> Torsten
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