On Mon, Dec 31, 2012 at 7:53 AM, Barney Cordoba <barney_cord...@yahoo.com> wrote:
... > Has anyone done an analysis on modern hardware as to whether udp csum > offloading is actually beneficial? Even on 2007 hardware I came to the > conclusion that using offloading was a negative. > > Reminds me of the days when people were using "intelligent" ethernet cards > that were slower than the host cpu. The handshaking cost you more than > just using shared memory. I would ask David about whether or not there was a performance difference because they might have some numbers for if_bxe. Not sure about the concept in general, but it seems like a reasonable application protocol specific request. But by and large, I agree that UDP checksumming doesn't make logical sense because it adds unnecessary overhead on a L3 protocol that's assumed to be unreliable. Thanks, -Garrett _______________________________________________ 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"
