Re: [LI] switching off cpu?

[Arun Sharma <adsharma@xxxxxxxxxxxxxxx>]

On Wed, Dec 08, 1999 at 12:36:45PM +0500, Bilal Muddassir wrote:

> Why do you throw the processor offline? What is an offlined processor?

A lot of the high end hardware has requirements for high availability.
People want to change the processor, disks and a lot of components
without having to shut the machine down.

Moving the processor offline means preventing it from picking up processes
from the scheduler queue and going into a tight loop, where it is safe
to take it out, without worrying about deadlocks in the system, due to
the resources that this processor was holding.

So its basically a big system wide synchronization + processor going
into a loop where it executes "halt" or something equivalent.

	-Arun
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