William Lee Irwin III wrote:
> Robert P. J. Day wrote:
>>> although it's not clear where in the source tree are the invocations
>>> that would actually make a difference to a MIPS system, which is why
>>> i've CC'ed ralf on this. i'm sure he can clear this up. :-)
>
> On Thu, Jun 07, 2007 at 10:32:29AM -0700, H. Peter Anvin wrote:
>> x86 could also benefit from coloured zeropages. In fact, I thought it
>> already had them (K8 wants as many as 8.)
>
> How would one demonstrate the beneficial effect of such?
Dean Gaudet at Transmeta did some benchmarking using SPEC. If I recall
his numbers correctly (this is from memory, mind you) on Transmeta
Efficeon, which has 2-way virtual cache tagging with hardware recovery,
zeropage coloring was a 1.5% performance improvement.
-hpa
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