On Sun, 13 Jul 2003 00:33:00 -0700 "Alan Shih" <alan@storlinksemi.com> wrote: > Or TOE is a forbidden discussion? TOE is evil, read this: http://www.usenix.org/events/hotos03/tech/full_papers/mogul/mogul.pdf TOE is exactly suboptimal for the very things performance matters, high connection rates. Your return is also absolutely questionable. Servers "serve" data and we offload all of the send side TCP processing that can reasonably be done (segmentation, checksumming). I've never seen an impartial benchmark showing that TCP send side performance goes up as a result of using TOE vs. the usual segmentation + checksum offloading offered today. On receive side, clever RX buffer flipping tricks are the way to go and require no protocol changes and nothing gross like TOE or weird buffer ownership protocols like RDMA requires. I've made postings showing how such a scheme can work using a limited flow cache on the networking card. I don't have a reference handy, but I suppose someone else does. And finally, this discussion belongs on the "networking" lists. Nearly all of the "networking" developers don't have time to sift through linux-kernel every day. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
