Hooman, I have run with dev.em.X.flow_control=0, which should have the same result as hw.em.fc_setting=0, and net.inet.tcp.tso is also 0. I'm not sure the remaining options would be able to produce the scenario I'm seeing, but I'm open to giving it a try with no options on the interfaces. I've also added ifconfig output to the collection.
options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC> ifconfig emX -rxcsum -txcsum -vlanhwtag -tso -wol options=88<VLAN_MTU,VLAN_HWCSUM> It's always TX, but these servers push ~12x what they receive, so I'm guessing it could happen to either buffer given the right traffic patterns. While looking through commits I also found a patch to add a couple sysctls for em, which I'm adding - http://freshbsd.org/commit/freebsd/r223676 Thanks, Jason On Wed, Oct 26, 2011 at 3:33 AM, Hooman Fazaeli <faza...@sepehrs.com> wrote: > Hi Jason > > Have you tried: > > hw.em.fc_setting="0" (in loader.conf) > ifconfig emX -tso -lro -rxcsum -txcsum -vlanhwtag -wol > > with MSIX and no multiqueue. > > Advanced features has always been a source of problem. > It is worth a try and help to narrow down possibilities. > > It would also be helpful if you provide 'ifconfig' output > when the problem happens. > > And a question: Does interface RX also hangs or it is just TX? _______________________________________________ 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"
