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SubjectRe: CPU Management for Linux?
Date
> I'm sure it won't be long until we'll see servers which have CPUs
> that could be removed or added while running. (And, yes - these
> machines are already there, but all these are really BigIrons from
> Sun, SGI, IBM etc.)

Also memory, and everything else.

> Therefore I think Linux should be capable of dealing with CPUs being added
> or removed during normal business. YMMV, opinions?

A long time ago Linus & I joked about "insmod smp".

Adding and removing CPU's from a scheduler point of view isnt too horrific.
You can force a CPU to not be running a task (eg send it an inter processor
interrupt). When you add a CPU you need to clone it an idle thread and
a stack.


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