Messages in this thread | | | Date | Tue, 3 Apr 2007 19:30:10 +0200 | From | Andi Kleen <> | Subject | Re: getting processor numbers |
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On Tue, Apr 03, 2007 at 06:22:41PM +0100, Alan Cox wrote: > > benefit for the common use cases. But as it is, the number of > > processors is not necessarily constant over the lifetime of a process. > > The machine architecture is. > > Not once you have migration capable virtualisation it isnt.
Migration is fundamentally incompatible with many CPU optimizations. But that's not a reason to not optimize anymore.
But I guess luckily most migration users will be able to live with a little decreased performance after it.
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