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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/