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From"Leonid Grossman" <>
SubjectRE: The ultimate TOE design
DateWed, 15 Sep 2004 22:25:48 -0700
> -----Original Message-----> From: jamal [mailto:hadi@cyberus.ca] > Sent: Wednesday, September 15, 2004 5:58 PM> To: Jeff Garzik> Cc: David S. Miller; alan@lxorguk.ukuu.org.uk; paul@clubi.ie; 
> netdev@oss.sgi.com; leonid.grossman@s2io.com; > linux-kernel@vger.kernel.org> Subject: Re: The ultimate TOE design> > Jeff,> You are only allowed to start a TOE thread only every six months ;->
> 
> On a serious note, I think that PCI-express (if it lives upto its
> expectation) will demolish dreams of a lot of these TOE investments.
> Our problem is NOT the CPU right now (80% idle processing 
> 450Kpps forwarding). Bus and memory distance/latency are. 
In servers, both bottlenecks are there - if you look at the cost of TCP and
filesystem processing at 10GbE, CPU is a huge problem (and will be for
foreseeable future), even for fastest 64-bit systems. 
I agree though that bus and memory are bigger issues, this is exactly the
reason for all these RDMA over Ethernet investments :-)
Anyways, did not mean to start an argument - with all the new CPU, bus and
HBA technologies coming to the market it will be another 18-24 months before
we know what works and what doesn't...
Leonid


>If > intel would get rid of the big conspiracy in the form of 
> chipset division and just integrate the MC like AMD is, we'll 
> be on our our way to kill TOE and a lot of the network 
> processors (like the IXP). Dang, running Linux is more 
> exciting than microcoding things to fit into a 2Kword program store. 
> > I rest my canadiana $.02 > > cheers,> jamal> 

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