Re: SMP/cc Cluster description

Rik van Riel
2001-12-06T17:53:03Z

On Thu, 6 Dec 2001, Davide Libenzi wrote:

> > Machines get dragged down by _uncontended_ locks, simply
> > due to cache line ping-pong effects.
>
> Rik, i think you're confused about lockless algos.
> It's not an rwlock where the reader has to dirty a cacheline in any case,
> the reader simply does _not_ write any cache line accessing the
> list/hash/tree or whatever you use.

Hmmm indeed, so the cache lines can be shared as long
as the data is mostly read-only. I think I see it now.

However, this would only work for data which is mostly
read-only, not for anything else...

Rik
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