On Tuesday, October 23, 2012 6:57:01 pm Garrett Cooper wrote: > Hi, > > Doing some poking around at the ixgb driver with a card I have at > $work using netperf and two machines hooked up over crossover, I > discovered that while ixgb's throughput performance was fantastic on > 7.3/7.4, thoughput performance of the card is degraded on 8.2/9.0/9.1 > by ~30% (9400Mbps on 7.4 -> 6294Mbps on 9.0 for example). LRO > performance on the other hand is fantastic and doesn't degrade with > the card across FreeBSD versions. Performance remains constant with > ixgb across 8.2/9.0/9.1. I didn't observe the CPU usage.
Interesting, maybe as an experiment try hacking the #ifdef's to use if_start() instead of if_transmit(). -- John Baldwin _______________________________________________ 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"
