On Fri, 2006-08-18 at 17:47 +0400, Alexey Dobriyan wrote: > On Fri, Aug 18, 2006 at 01:29:01PM +0200, Jan-Bernd Themann wrote: > > Was there noticeable performance difference when explicit prefetching is > removed? At some (invisible) point CPUs will become smarter about prefetching > than programmers and this code will be slower than possible.
Hi, what you say is true in general, however the packet response part of the kernel is special; the cpu just cannot know where your card just dma'd the packet to (and thus cleared it from any caches anywhere in the system) so it's going to be pretty much a 100% cachemiss always... Greetings, Arjan van de Ven - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
