JC, Interesting post.
>So when you look at a 10 GigE number like 7 Gbps, we actually >> forwarding 7 Gbps full duplex in and out, or a total of 28 Gbps of >> aggregate >> traffic. Thats pretty impressive. Considering CPU front side bus, is also a bottle neck point. I'm assuming the 10GB card design is playing a significant role to bypass CPU bottleneck? But its great to see Imagestream pioneering this technology. Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband ----- Original Message ----- From: "George Rogato" <wi...@oregonfast.net> To: "WISPA General List" <wireless@wispa.org> Sent: Thursday, April 09, 2009 5:56 PM Subject: Re: [WISPA] FW: 10 GigE > So what price range are we talking for such an animal? > > > Jeff Broadwick wrote: >> I don't think this went out to the list: >> >> >> Hey Tom. >> >> We just pushed over 7 Gbps full duplex over 18 GigE ports in the lab, so >> we're fast approaching that 10 GigE mark. With small packets, the same >> system forwarded around over 2.3 million PPS. With PCI Express, our >> systems >> are generally limited by CPU and memory speed instead of being bus >> limited. >> This means that as long as we can get faster CPUs and memory, we can move >> more packets over PCI Express interfaces. >> >> The PCIe bus can support 250 MBps full duplex over a single x1 lane, >> which >> is the same as 2 Gbps (B = Byte and b = bit) full duplex. The widest PCI >> Express bus we support currently is x16, which provides up to >> 32 Gbps full duplex. We don't currently have any cards that require this >> much bandwidth, but again, this performance is CPU and memory limited. >> >> The 7 Gbps Jeff mentioned is actually not a published performance spec >> because we are having issues with our test bed. The 10 GigE cards we are >> testing have multiple stream processors in them, and they are not >> designed >> to be able to forward 10 GigE with a single IP stream. We don't have 10 >> GigE >> cards for our Smartbits 6000, so we are testing with a NeStream 10 GigE >> test >> system. This system has not made it easy to control the flows, and we may >> need additional software to support the testing we need to do. >> >> In any case, we expect to get to 10 GigE at wire speed with large packets >> yet this year. Our vendors claim to have achieved this level of >> performance, >> so we should be able to get to the same throughput. I can't really >> comment >> on small packet performance, other than to say we've seen over 500 Mbps >> full >> duplex throughput with pure 64-byte traffic on our GigE ports, so I >> expect >> to be able to forward at least this much traffic with our 10 GigE cards. >> >> Also, don't forget that we are talking about 10 GigE in and out with this >> test. So when you look at a 10 GigE number like 7 Gbps, we actually >> forwarding 7 Gbps full duplex in and out, or a total of 28 Gbps of >> aggregate >> traffic. >> >> jc >> >> >> Jeff Broadwick wrote: >> >>> Hi Tom, >>> >>> We think we will eventually be able to saturate a 10 Gig link (PCIe), >>> but >>> you aren't going to go much higher than that. >>> >>> Jeff >>> ImageStream >>> >>> -----Original Message----- >>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>> Behalf Of Tom DeReggi >>> Sent: Thursday, April 09, 2009 2:30 PM >>> To: WISPA General List >>> Subject: Re: [WISPA] 10 GigE >>> >>> And that is not likely an Imagestream specific limit, but a general PC >>> archetecture limit. A lot of high end gear will max out by then or >>> before. >>> >>> Tom DeReggi >>> RapidDSL & Wireless, Inc >>> IntAirNet- Fixed Wireless Broadband >>> >>> >>> ----- Original Message ----- >>> From: "Jeff Broadwick" <jeffl...@comcast.net> >>> To: "'WISPA General List'" <wireless@wispa.org> >>> Sent: Thursday, April 09, 2009 2:09 PM >>> Subject: Re: [WISPA] 10 GigE >>> >>> >>> >>> >>>> Hi Mike, >>>> >>>> Depends on packet size. We have 10 Gig cards that we can put in our >>>> routers, but we can't run one full out yet. About the best we've seen >>>> in >>>> the lab is 7 Gigs full duplex, in optimal conditions. >>>> >>>> Jeff >>>> ImageStream >>>> >>>> -----Original Message----- >>>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>>> Behalf Of Mike Hammett >>>> Sent: Thursday, April 09, 2009 1:23 PM >>>> To: WISPA General List >>>> Subject: [WISPA] 10 GigE >>>> >>>> Any recommendations for routers that have multiple 10 GigE interfaces? >>>> I >>>> believe the PowerRouter can only do 3 and I'm looking for at least 4, >>>> >> even >> >>>> up to 8 or 10. I didn't see anything from ImageStream that went that >>>> high. >>>> >>>> I don't need to do 100 Gigs of throughput, but if you need 1 GigE of >>>> commit, >>>> you really need a 10 GigE for bursting. >>>> >>>> >>>> ----- >>>> Mike Hammett >>>> Intelligent Computing Solutions >>>> http://www.ics-il.com >>>> >>>> >>>> >>>> >>>> >>>> >> ---------------------------------------------------------------------------- >> >>> >>> >>>> ---- >>>> WISPA Wants You! Join today! >>>> http://signup.wispa.org/ >>>> >>>> >>>> >> ---------------------------------------------------------------------------- >> >>> >>> >>>> ---- >>>> >>>> WISPA Wireless List: wireless@wispa.org >>>> >>>> Subscribe/Unsubscribe: >>>> http://lists.wispa.org/mailman/listinfo/wireless >>>> >>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>> >>>> >>>> >>>> >>>> >>>> >> ---------------------------------------------------------------------------- >> >>> ---- >>> >>> >>>> WISPA Wants You! Join today! >>>> http://signup.wispa.org/ >>>> >>>> >>>> >> ---------------------------------------------------------------------------- >> >>> ---- >>> >>> >>>> WISPA Wireless List: wireless@wispa.org >>>> >>>> Subscribe/Unsubscribe: >>>> http://lists.wispa.org/mailman/listinfo/wireless >>>> >>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>> >>>> >>> >>> >>> >> ---------------------------------------------------------------------------- >> >>> ---- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> >>> >> ---------------------------------------------------------------------------- >> >>> ---- >>> >>> WISPA Wireless List: wireless@wispa.org >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >>> >>> >> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! 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