Matt Dillon wrote:
>
> Well, first of all the page coloring is not pointless with the
> sizes hardwired. The cache characteristics do not have to
> match exactly for page coloring to work. The effectiveness is
> like a log-graph, and you don't lose a lot by guessing wrong.
> Once you get past a designated cache size of 4-pages or so you've
> already reaped 90% of the benefit on systems which use N-way (2, 4, 8)
> associative caches (which is most systems these days). For systems with
> direct-mapped caches you reap 90% of the benefits once you get past
> 16 pages or so.
If I remember correctly from reading a thesis (can't remember its
author) on the page coloring which I believe widely introduced this
concept, page coloring adds a lot of efficiency to the directly
mapped caches but even for the 2-way caches is nearly pointless.
-SB
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