Re: Process Migration on Linux - Impossible?
Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 2 Oct 1997 07:50:26 +0100 (BST)
> memory, can neatly solve the difficulties of moving a process with open
> shared memory...so long as at most one machine can have a valid copy of
> any given page at any given point in time. Relaxing this last restriction,
> however, brings down all the horrors of fully general shared memory upon
> you.
So long as only one machine has a writable copy. The rather neat DSM code
available as Linux patches handles some of this. There are scaling issues
(you want to be able to answer the question "who has page n").
Alan