Re: possible spinlock optimizations

Momchil Velikov (velco@fadata.bg)
Wed, 29 Sep 1999 10:03:21 +0300

Manfred wrote:
> 2) Have you read this note about W2K spinlock?
> http://www.numega.com/drivercentral/resources/spinlocks.shtml
> They claim their implementation has better SMP memory bus characteristics.
> Has anyone tried to implement something like this?

As far as I can understand, the good thing is that releasing the spinlock
doesn't cause
reload of the corresponding cache lines in all the processors spinning on it,
it's something like "wakeup-one" vs. "wakeup-all".

Regards,
-velco

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