Marcus- > On 04/06/2010 09:44 PM, John Gilmore wrote: >>> Which part of the Linux issue... sustained throughput or latency? I >>> wouldn't be surprised to find that latency >>> hasn't >>> improved substantially because it's not a priority for server software. >>> Even VoIP applications are not concerned >>> about a 1 msec improvement... whereas that makes or breaks a wireless MAC. >>> >> > Simple test. Core 2 Duo system, 2.33GHz, Fedora 11. > > A 1500 byte ping test to localhost yields an average RTT of about > 33usecs. That tests most of > the network stack except for hardware interfaces, and gives you some > notion of "best case" > for latency/turn-around time. > > If MACs have requirements that are more aggressive than 20-50usec > turnaround time, then relying > purely on software in a running general-purpose operating system, even > on relatively-good hardware > may be optimistic.
I think there is no way to avoid that MAC-related processing has to be done prior to the server motherboard. -Jeff _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
