Re: Recompile kernel without SMP

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Michael Cronenworth wrote:
Paul Grinberg on 08/14/2009 11:37 AM wrote:
I am trying to recompile kernel without SMP.

No need to recompile. Add "nosmp" to your kernel command line on bootup.

You can set maxcpu=1 as well, but it will still be an SMP kernel, with the assorted logic which keeps processors from stepping on each other. It will make a small (essentially meaningless) performance improvement on a uniprocessor machine, to quote myself "measurable but not meaningful" in magnitude.

This was important when we ran on 386-16 CPUs with 8MB RAM, it means essentially nothing now, other than he should be able to do it.

Stupid question #1: you did look in grub.conf to see that you are booting the right kernel? That your new kernel is even in grub.conf?

--
Bill Davidsen <davidsen@xxxxxxx>
  "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot

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