2011/12/27 Lev Serebryakov <l...@freebsd.org>: > Hello, Luigi. > You wrote 27 декабря 2011 г., 18:26:00: > >> plans, yes - not sure how long it will take. I have compiled >> ipfw+dummynet as a standalone module (outside the kernel) >> but have not yet hooked the code to netmap to figure out how fast >> it can run. > I still don't understand why it should be faster than "normal" way, > as it is essentially same (ipfw + dummynet) code + some additional > context switches for netmap (to userland and back). > What does netmap shave off from packet processing in this particular > case, to compensate context switches? I
Reloading of mbufs into DMA descriptors? mbuf allocator overhead itself? Interrupts. Context switches under constant heavy load. Some indirection in the network stack. _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
