Date: Fri, 27 Sep 2013 08:52:08 -0700 From: hiren panchasara <hiren.panchasara@gmail.com> To: chintu hetam <rometoroam@gmail.com>, Michio Honda <micchie@outlook.com>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, Luigi Rizzo <rizzo@iet.unipi.it> Subject: Re: netmap: traffic distribution Message-ID: <CALCpEUFYVRPrgX4R_8Ase7j05ToaUivgg23yuBUeHUsMiQgZqA@mail.gmail.com> In-Reply-To: <CAOH8HtpGQnE13m3EZ2uCWxrtEa-cevoREBtL1BgEQ=LyA53fbg@mail.gmail.com> References: <CALCpEUFhfcZO9keQ_fpmCQhg5DVA5DNrG5Neogm5TV_QiAYPRw@mail.gmail.com> <CA%2BhQ2%2Bid6tEcmtRWu4%2BLFZDmthwto3rAdqrSyJrY-r%2BJx=vhhg@mail.gmail.com> <CALCpEUENg%2BVq0Z0Evpw=7VEBTLq_T2eZQ9UgSpsxUn5OOjd3eQ@mail.gmail.com> <CA%2BhQ2%2Bg4%2B2P_L8kLLL0Svky3xrvxJW7zjc07xSTgNknEqNvr0A@mail.gmail.com> <CALCpEUHLLfvakMzDJPL=tPym1d6m13Wgbid7NOWEoMxZ1%2B6kGg@mail.gmail.com> <BAY176-W227BF61C5551E2295DC646BC280@phx.gbl> <CALCpEUGjCvL5UEiXaOnBKaHSf%2B%2BHRGR4m-57SABGjEpiHmCZWA@mail.gmail.com> <CAOH8Htqz%2BU6AguXTJbdf9FWDGMvA=xUJFJVfJ0Tu-4X6mfbESw@mail.gmail.com> <CALCpEUGFA7vU1TV1dMFA2UAHkKn_giPDyOdH%2BdSR6zX=97sCuQ@mail.gmail.com> <CAOH8HtpGQnE13m3EZ2uCWxrtEa-cevoREBtL1BgEQ=LyA53fbg@mail.gmail.com>
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I think you meant "reply-all" :-) On Fri, Sep 27, 2013 at 7:53 AM, chintu hetam <rometoroam@gmail.com> wrote: > As far as i know, flow director is Intel terminology it addresses both RSS > and RFS. I think FreeBSD implementation is RFS. > > Luigi, you touched upon SW de-multiplexer, i would like to know why it's > necessary. > let say i have 82599 ixgbe driver (RSS enabled)configured with 5 tuple > hash. My application reads from netmap queue 0-7(1-8), i know for sure that > each hash will be filtered to specific hw queue(0-7), is it safe to assume > netmap will provide packets in same order. > > Michio, reason i asked for performance values > http://arxiv.org/ftp/arxiv/papers/1106/1106.0443.pdf > I would like to test the accuracy of RFS,RSS and others in netmap mode.. > > Thanks > Hardik > > > On Fri, Sep 27, 2013 at 2:59 AM, hiren panchasara < > hiren.panchasara@gmail.com> wrote: > >> >> >> >> On Thu, Sep 26, 2013 at 2:27 PM, chintu hetam <rometoroam@gmail.com>wrote: >> >>> Hiren, >>> >>> https://www.kernel.org/doc/Documentation/networking/scaling.txt must >>> read to understand nuances of each of this features. None of this >>> techniques are used for mostly none other than performance reasons. >>> >> >> Thanks for the link. >> So, RFS (Receive Flow Steering) is equivalent to "flow director" >> mentioned in FreeBSD's ixgbe drivers? >> >>> >>> Michio, personally i am interested to know performance results in netmap >>> mode with RFS patch you just mentioned. >>> >> Takuya/Luigi might have some numbers. >> >> Thanks, >> Hiren >> >> <skip> >> >> >
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