Garrett D'Amore wrote: > Andrew Gallatin wrote: >> Garrett D'Amore wrote: >> > I agree with Dana's sentiments here. >> > >> > I'll add one thing, from my own experience: in my own experience the >> > pain and suffering of dealing with scatter/gather is not justified on >> > modern systems with ordinary sized ethernet frames. In fact, >> experience >> >> You might want to amend this with "on slow networks." For >> 10GbE or faster, (and maybe even 1GbE on old, slow hardware) >> s/g is definitely worth it. >> >> Just this morning I doing some tests on a fairly recent 8-way AMD64 >> with uperf. Copying rather than mapping roughly doubles CPU >> utilization (20% -> 40%) as reported by vmstat for 8 threads sending >> on a 10GbE interface (bandwidth is 10GbE line rate regardless). >> > > What MTU?
1500b. Drew _______________________________________________ driver-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/driver-discuss
