Date: Tue, 13 Feb 2001 17:44:03 -0800 (PST) From: Luigi Rizzo <rizzo@aciri.org> To: ras@e-gerbil.net (Richard A. Steenbergen) Cc: rizzo@aciri.org, net@freebsd.org Subject: Re: fxp performance ? Message-ID: <200102140144.f1E1i8I57239@iguana.aciri.org> In-Reply-To: <Pine.BSF.4.21.0102132026190.38591-100000@overlord.e-gerbil.net> from "Richard A. Steenbergen" at "Feb 13, 2001 8:31:33 pm"
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> I have had no problem doing line rate w/fxp and a p3 500 (well not to say > no problem, but it is achievable). In my experience the biggest overheads you mean with min-sized packets ? what version of freebsd ? I'd be interested to repeat this. > are ip_output() and routing lookups. If you can't push past a certain > amount and you're not CPU bound, check the device you're connected to > because often times its inability to transmit the packet. Were both cards > connected to the same device outputting to the same destination under the > same lan conditions? i tried with back-to-back cards using a cross-over cable, full duplex. dc --> dc and dc --> fxp gives ~143Kpkts/s over long term, fxp --> fxp and fxp --> fxp gives ~105Kpkts/s over long term, in both cases counted with netstat on the source side, in both cases changing the receiver and the source box makes no difference. cheers luigi ----------------------------------+----------------------------------------- Luigi RIZZO, luigi@iet.unipi.it . ACIRI/ICSI (on leave from Univ. di Pisa) http://www.iet.unipi.it/~luigi/ . 1947 Center St, Berkeley CA 94704 Phone: (510) 666 2927 ----------------------------------+----------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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