We're running a service with a 82576 configured with 4 queues and a maxed rxd/txd configuration:
http://people.freebsd.org/~sbruno/igb_stats.txt We still see, under higher load spikes, a tendency to drop packets (I suspect an application issue at this point, but want to attempt to alleviate some congestion). I note that IGB_MAX_RXD is set to 4k. Reviewing the Intel spec shell on the 82576 I see that the maximum value for the Descriptor Ring Length (8.10.8) is 32k descriptors. Does that mean I should be able to go higher that 4k? I suspect that even if I can, that would merely make the traffic fill more buffer space, but maybe its enough to make it work a bit better. Sean _______________________________________________ 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"
