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: [email protected] [mailto:[email protected]] 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" <[email protected]> > To: "'WISPA General List'" <[email protected]> > 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: [email protected] [mailto:[email protected]] 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: [email protected] >> >> 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: [email protected] >> >> 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: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > -------------------------------------------------------------------------------- WISPA Wants You! 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