> On Thu, Nov 29, 2001 at 09:27:45PM +0200, Official Flamer/Cabal NON-Leader wrote:
> > On Thu, Nov 29, 2001 at 12:10:17PM +0200, Shachar Shemesh wrote:
> > > [EMAIL PROTECTED] wrote:
> > >
> > > >In a box with 2 CPUs, I am using RedHat kernel 2.4.7.
> > > >1) Is it possible to enable/disable, by software means, a specific CPU
> > > >(cpu 0 | cpu 1) ?
> > > >
> > > >2) While both CPUs are enabled, can we enforce a program to run ONLY
> > > >on a specific CPU ?
> >
> > As far as I know, 1 is NO.
> >
> > The short answer to 2 is also no. The slighty longer one is that, to the
> > best of my knowledge, CPU affinity is not in the kernel but I remember
> > Jseeing references to building it, somewhere.
> >
> > It should be possible to bolt something very crude onto the current
> > scheduler, but it is not a trivial effort to do it properly...
> .
> .
>
> There is a an uncomplanied-about patch for the 2.4/2.5 series.
> Actually there are two patches that differ only in their interface:
> Robert Love wants is in /proc, and Rik van Riel (I think) wants it
> as a system call. This issue alone is bound to keep the patches
> in the center of a flamewar for the next six months or so, and
> therefore out of the kernel, but you can try searching the recent
> list archives for it and apply it in the privacy of your own
> /usr/src.
>
Have you got an opinion about what is a better choice (system call or
/proc)?
--
Shaul Karl
email: shaulka (replace these parenthesis with @) bezeqint,
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