On Fri, 25 Apr 2014 15:02:15 +0100 "Steven Hartland" <kill...@multiplay.co.uk> wrote about Re: NFS over LAGG / lacp poor performance:
SH> We find that large numbers of queues causes high interrupt issues Like the thing I am seeing with igb1 on my system? --- root@storage:/root # vmstat -i interrupt total rate irq1: atkbd0 2743 0 irq18: ehci0 uhci5 4445560 2 irq21: uhci1 29 0 cpu0:timer 355724275 227 irq256: igb0:que 0 99437514 63 irq257: igb0:que 1 61534816 39 irq258: igb0:que 2 101725601 65 irq259: igb0:que 3 100864440 64 irq260: igb0:link 2 0 irq261: igb1:que 0 1689527 1 irq262: igb1:que 1 2357590958 1510 irq263: igb1:que 2 1584474 1 irq264: igb1:que 3 1923144 1 irq265: igb1:link 2 0 irq266: mps0 332232450 212 irq267: mps1 194207894 124 irq268: mps2 176700834 113 irq269: ahci0 59175548 37 cpu1:timer 419838321 268 cpu3:timer 329696415 211 cpu2:timer 328219053 210 Total 4926593600 3156 --- irq262 sticks out like a sore thumb... SH> however at a guess you did this to enable the machine to boot with SH> all nics due to lack of auto mbuf tuning in 9.x. SH> I'd go with ~2 queues per nic. I was wondering what to try next for my system: either manually set the queues back to 2 or 1 per NIC, or try upgrading to either 9.2 or 10 as it looked like there have been improvements in the igb driver. Do you have any recommendations on that? cu Gerrit _______________________________________________ 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"
