I was under the impression that they were writing into the cache not out of it... I really need to read that article again :-D
Ken On Thu, 31 Jan 2002, Jason Evans wrote: > On Wed, Jan 30, 2002 at 11:14:48PM +0100, Gérard Roudier wrote: > > > > Linux can be fixed, but the useless writes of the existing Athlons from > > the very fast cache to the relatively very slow memory cannot. And all > > Athlon users may well pay this penalty under any OS... unless we want to > > disable caching. :) > > Have you done benchmarks to show that the speculative writes are useless > often enough to cause enough memory bus contention that overall performance > is degraded, despite the speedups when the speculative writes are valid? I > suspect that AMD in fact performed such tests; otherwise they wouldn't have > gone to the trouble of implementing speculative writes. > > Jason > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-current" in the body of the message > > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
