Date: Fri, 19 Nov 2010 13:08:47 -0500 From: Chris Buechler <cbuechler@gmail.com> To: Holger Rauch <Holger.Rauch@empic.de> Cc: "freebsd-pf@FreeBSD.org" <freebsd-pf@freebsd.org> Subject: Re: PF from OpenBSD 4.5 available as patch for 8.1-STABLE? Message-ID: <AANLkTikj9q543N01nU4-nbUeh5ts391YUh7Qtkcbjs5B@mail.gmail.com> In-Reply-To: <1989F0C06F24544989EB233736143E7C01F7A6CC@MX1.heitec.net> References: <1989F0C06F24544989EB233736143E7C01F7A6CC@MX1.heitec.net>
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On Fri, Nov 19, 2010 at 10:21 AM, Holger Rauch <Holger.Rauch@empic.de> wrote: > Hi, > > is there such a patch? The reason why I ask for it is: > > I'm currently experiencing saturated network interfaces when using gigabit networking in conjunction with certain Linux driver<->NIC combos for Broadcom chips against the PF version shipped with FreeBSD 8.1 stable running on a HP ProLiant DL 180 G5 server. > > The problem only occurs with high throughputs (at least 30 MBytes/sec) caused by scp/rsync. Up to now, I've come accross this issue with > > Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02) (tg3 driver in Linux) > > and > > Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20) > (bnx2 driver in Linux; this is used in various HP ProLiant servers) > > But it doesn't occur with Intel chips and also not with this chip > You're trying to fix a NIC driver-related issue by messing with your firewall, you're most likely looking in the wrong place. May have more luck posting to freebsd-net. One thing to try is disabling hardware checksum offloading (rxcsum, txcsum) to see if that makes any difference, with some NICs it causes issues.
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