----- "Robert Kubrick" <[EMAIL PROTECTED]> wrote: > However, some observers predict TOE cards will be back as 10 Gigabit > Ethernet network capacity leapfrogs processing power again.
Van Jacobsen's "channelised" mods to the Linux TCP stack described at Linux.Conf.Au in Dunedin, NZ in 2006 showed that the 4.3Gb/s limit he hit on 10GigE was due to the DDR333 MHz RAM in the box and not the CPUs, he commented during the presentation that they'd proved it to themselves by putting in faster memory and getting a speedup. :-) http://www.lemis.com/grog/Documentation/vj/lca06vj.pdf He estimated that you would need at least DDR800 RAM to be able to have enough memory bandwidth to drive 10GigE at capacity. Whilst VJ's code didn't (to my knowledge) get published it did inspire other work by kernel hackers, though I'm not sure how much of it (if any) got into the mainline. http://lwn.net/Articles/182060/ cheers, Chris -- Christopher Samuel - (03) 9925 4751 - Systems Manager The Victorian Partnership for Advanced Computing P.O. Box 201, Carlton South, VIC 3053, Australia VPAC is a not-for-profit Registered Research Agency _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
