Date: Wed, 26 Oct 2011 04:33:44 -0700 From: Jason Wolfe <nitroboost@gmail.com> To: Hooman Fazaeli <fazaeli@sepehrs.com> Cc: freebsd-net@freebsd.org Subject: Re: Intel 82574L interface wedging on em 7.1.9/7.2.3 when MSIX enabled Message-ID: <CAAAm0r3Nr2t8cCetPkFnLQ-3KwqHw_0SpqbtvYPRUkSP=9n8CA@mail.gmail.com> In-Reply-To: <4EA7E203.3020306@sepehrs.com> References: <CAAAm0r0RXEJo4UiKS=Ui0e5OQTg6sg-xcYf3mYB5%2Bvk8i8557w@mail.gmail.com> <4E8F157A.40702@sentex.net> <CAAAm0r2JH43Rct7UxQK2duH1p43Nepnj5mpb6bXo==DPayhJLg@mail.gmail.com> <4E8F51D4.1060509@sentex.net> <CACqU3MVwLaepFymZJkaVk6p=SpykGhqs=VYFjLh9fP9S=AxDhg@mail.gmail.com> <CAAAm0r1DKvoL9=Ket9up=4%2B5xiCzTTZJK99FhF9jcCA28B0M%2BA@mail.gmail.com> <CAAAm0r3XdsMHZh%2BP_NF-txZasdExzwZ8ymmGQgGhJQds0fOiBQ@mail.gmail.com> <CAAAm0r1iS3z-7CBJ=xYDf%2BJOA1Q2nU0O54Twbyb7FjvgWHjKVw@mail.gmail.com> <4EA7E203.3020306@sepehrs.com>
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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 <fazaeli@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?
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