Date: Tue, 22 May 2012 23:05:23 +0530 From: Venkat Duvvuru <venkatduvvuru.ml@gmail.com> To: "Bjoern A. Zeeb" <bz@freebsd.org> Cc: freebsd-net@freebsd.org, Jack Vogel <jfvogel@gmail.com>, freebsd-questions@freebsd.org Subject: Re: LRO support for IPv6 Message-ID: <CAGdae7ZX4M4NPnJ=3K1vA9TLPW22r2EpTic-Y4kJMyJQGn3zGw@mail.gmail.com> In-Reply-To: <72B744D5-3D24-4A56-907C-2A8F6620877B@FreeBSD.org> References: <CAGdae7bcWqGbObygPdZwCyVG4Pe-0Fxq5_p19oCp61uzZ4N8xw@mail.gmail.com> <CAFOYbc=ng83L8iZ_N79edqhknOrDPqVA9ASMexW5-yU0vnduDQ@mail.gmail.com> <A8DB9672-6B84-4635-84B6-43CC98B2877F@FreeBSD.org> <CAFOYbckwRw4jazwqY1S7X2wiSdBBBPdg-Xk8ya99j1%2BWbqB=DA@mail.gmail.com> <72B744D5-3D24-4A56-907C-2A8F6620877B@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Thanks for the response. I observed that there is a significant performance drop in case of IPv6 on the "rx" side. While I'm able to hit line rate ~9.5 Gbps on a 10gb NIC for IPv4..I could only get ~6 Gbps on the "rx" front for IPv6...However "tx" for IPv6 is on par with IPv4 hitting almost line rates. Could this be because of lack of LRO6?? Note: hwpmc profiling shows that most of the time is spent in the IPv6 stack code /Venkat On Tue, May 22, 2012 at 10:37 PM, Bjoern A. Zeeb <bz@freebsd.org> wrote: > > On 22. May 2012, at 17:04 , Jack Vogel wrote: > > > Oh, that's right, distracted with other projects and I forgot, now we > just need > > to have an LRO that works with forwarding eh :) > > That's a 6 line bainaid commit afterwards, basically returning form the > LRO queuing > function in case forwarding is turned on for that address family; a > proper solution > for long term can than be done whenever we feel like it. The above we > should have done > years ago;) > > > > You ROCK bz :) > > > > Jack > > > > > > On Tue, May 22, 2012 at 10:01 AM, Bjoern A. Zeeb <bz@freebsd.org> wrote: > > > > On 22. May 2012, at 16:50 , Jack Vogel wrote: > > > > > The LRO code as it stands right now is IPV4 specific, it would be nice > to > > > extend it, one of > > > many improvements that may get done at some point. > > > > I am about to commit it to HEAD. Bear another few days with me; I know > > I am running late but committing new code had less prio than some other > > real life things currently. > > > > I'll also bring TSO6, etc... > > -- > Bjoern A. Zeeb You have to have visions! > It does not matter how good you are. It matters what good you do! > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAGdae7ZX4M4NPnJ=3K1vA9TLPW22r2EpTic-Y4kJMyJQGn3zGw>