Date: Tue, 14 Aug 2012 22:54:38 +0200 From: Luigi Rizzo <rizzo@iet.unipi.it> To: Adrian Chadd <adrian@freebsd.org> Cc: net@freebsd.org Subject: Re: ipfw meets netmap (6.5 Mpps in userspace) Message-ID: <20120814205438.GA32568@onelab2.iet.unipi.it> In-Reply-To: <CAJ-Vmokcxket04cgS5xMtFjmFiOZO3UP9B-FH8mwwPhOeMibHA@mail.gmail.com> References: <20120813111722.GA79347@onelab2.iet.unipi.it> <CAJ-Vmokcxket04cgS5xMtFjmFiOZO3UP9B-FH8mwwPhOeMibHA@mail.gmail.com>
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On Tue, Aug 14, 2012 at 01:22:54PM -0700, Adrian Chadd wrote: > Hi! > > This stuff is very cool. > > So why is it that we can do such ridiculous packet processing rates > via netmap and ipfw in userland but not in the traditional driver path > in-kernel? > > (I think I know the answer, I'm just tossing it out there for discussion.) I'd point you to the slides of my usenix talk http://info.iet.unipi.it/~luigi/netmap/talk-atc12.html or even the video of the talk itself https://www.usenix.org/conference/usenixfederatedconferencesweek/netmap-novel-framework-fast-packet-io (on passing, i think the Usenix policy of making material publicly available is really commendable.) cheers luigi > > On 13 August 2012 04:17, Luigi Rizzo <rizzo@iet.unipi.it> wrote: > > I just finished a netmap-enabled version of ipfw/dummynet, which > > runs in userspace and is able to process over 6 million packets per > > second (Mpps) with simple rulesets, and over 2.2 Mpps through > > dummynet pipes (tested on an i7-3400 connected to VALE ports; > > VALE is a software switch part of netmap). > > You can find it at > > > > http://info.iet.unipi.it/~luigi/dummynet/#8696 > > > > It works on FreeBSD and Linux. > > > > It even run on OSX, but there is no netmap support there; > > any interest, Apple ? In any case, it should be simple to > > adapt the network backend to talk to other devices. > > > > To run this you might want to use the most recent version of netmap, > > also recently updated so it works with recent kernels > > > > http://info.iet.unipi.it/~luigi/netmap/ > > > > (the code is already in FreeBSD HEAD). > > > > On passing, I have also updated the dummynet distributions > > for Linux and Windows, which should now compile for most > > recent version of Linux, and for Windows 32 and 64 bit: > > > > http://info.iet.unipi.it/~luigi/dummynet/ > > > > cheers > > luigi > > _______________________________________________ > > freebsd-net@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-net > > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
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