On Sun, 5 Apr 2009, Ivan Voras wrote:
I thought this has something to deal with NIC moderation (em) but can't really explain it. The bad performance part (not the jump) is also visible over the loopback interface.
FYI, if you want high performance, you really want a card supporting multiple input queues -- igb, cxgb, mxge, etc. if_em-only cards are fundamentally less scalable in an SMP environment because they require input or output to occur only from one CPU at a time.
Robert N M Watson Computer Laboratory University of Cambridge _______________________________________________ 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"
