Date: Sun, 9 May 2010 06:43:29 -0700 (PDT) From: Barney Cordoba <barney_cordoba@yahoo.com> To: Vincent Hoffman <vince@unsane.co.uk>, Murat Balaban <murat@enderunix.org> Cc: freebsd-net@freebsd.org, freebsd-performance@freebsd.org, grarpamp <grarpamp@gmail.com> Subject: Re: Intel 10Gb Message-ID: <473112.87657.qm@web63906.mail.re1.yahoo.com> In-Reply-To: <1273323582.3304.31.camel@efe>
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--- On Sat, 5/8/10, Murat Balaban <murat@enderunix.org> wrote: > From: Murat Balaban <murat@enderunix.org> > Subject: Re: Intel 10Gb > To: "Vincent Hoffman" <vince@unsane.co.uk> > Cc: freebsd-net@freebsd.org, freebsd-performance@freebsd.org, "grarpamp" <grarpamp@gmail.com> > Date: Saturday, May 8, 2010, 8:59 AM > > Much of the FreeBSD networking stack has been made parallel > in order to > cope with high packet rates at 10 Gig/sec operation. > > I've seen good numbers (near 10 Gig) in my tests involving > TCP/UDP > send/receive. (latest Intel driver). > > As far as BPF is concerned, above statement does not hold > true, > since there is some work that needs to be done here in > terms > of BPF locking and parallelism. My tests show that there > is a high lock contention around "bpf interface lock", > resulting > in input errors at high packet rates and with many bpf > devices. > > I belive GSoC 2010 project, Multiqueue BPF, is a milestone > for this: > http://www.freebsd.org/projects/ideas/ideas.html#p-multiqbpf > > I'm also working on this problem myself and will post a > diff whenever > I have something usable. > > > -- > Murat > http://www.enderunix.org/murat/ > > > > On Sat, 2010-05-08 at 10:01 +0100, Vincent Hoffman > > wrote: > > Looks a little like > > http://lists.freebsd.org/pipermail/svn-src-all/2010-May/023679.html > > but for intel. cool. > > > > Vince > > On 07/05/2010 23:01, grarpamp wrote: > > > Just wondering in general these days how close > FreeBSD is to > > > full 10Gb rates at various packet sizes from > minimum ethernet > > > frame to max jumbo 65k++. For things like BPF, > ipfw/pf, routing, > > > switching, etc. > > > http://www.ntop.org/blog/?p=86 > > > _______________________________________________ Blah, Blah, Blah. Let's see some real numbers on real networks under real loads. Until then, you've got nothing. BC
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