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SubjectRe: CPU Management for Linux?
On Mon, 22 Mar 1999, Alex Buell wrote:
> On Mon, 22 Mar 1999, Ingo Molnar wrote:
> > On Mon, 22 Mar 1999, Alan Cox wrote:
> >
> > > > the above applies here -- if we tie a process to a specific processor
> > > > or set of processors (there are patches which implement an IRIX
> > > > compatible API here), how do we remove the processor?
> > >
> > > You kill it, suspend it until the new CPU is added, or transfer it to
> > > another CPU
> >
> > or we can just return '-EBUSY' for the CPU-removal system call, the logic
> > is similar to umounting a filesystem.
>
> % mount -t cpu /dev/cpu0
> % umount -t cpu /dev/cpu1
>
> Cool idea.

i would think there would be need to unconditionally and safely vary a CPU
offline, for example during a machine check. how hard could it be to
transparently transfer running processes to other CPUs?

- Chuck Lever
--
corporate: <chuckl@netscape.com>
personal: <chucklever@netscape.net> or <cel@monkey.org>

The Linux Scalability project:
http://www.citi.umich.edu/projects/citi-netscape/


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