From owner-freebsd-hackers Sat Jul 17 17:47:21 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [209.157.86.2]) by hub.freebsd.org (Postfix) with ESMTP id 0594B14C3C for ; Sat, 17 Jul 1999 17:47:18 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.9.3/8.9.1) id RAA86301; Sat, 17 Jul 1999 17:44:33 -0700 (PDT) (envelope-from dillon) Date: Sat, 17 Jul 1999 17:44:33 -0700 (PDT) From: Matthew Dillon Message-Id: <199907180044.RAA86301@apollo.backplane.com> To: Vincent Poy Cc: sthaug@nethelp.no, tim@storm.digital-rain.com, freebsd-hackers@FreeBSD.ORG Subject: Re: poor ethernet performance? References: Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG :> 2.6 MB/sec is what I would expect if you were running the test :> over an ssh link on a fast cpu - the encryption eats a lot of cpu. But :> a normal rcp or ftp or data transfer can easily do 9-10 MBytes/sec. : : That was actually done with ftp between two machines connected :Full Duplex to a Cisco Catalyst 2924XL switch. :Vince - vince@MCESTATE.COM - vince@GAIANET.NET ________ __ ____ You've got breakage somewhere, I've run 9-10 MBytes/sec in both directions at once through a catalyst between two FreeBSD boxes at full-duplex. Check for interface errors or collisions - this kinda sounds like the duplex hasn't been matched up. You should have no errors and no collisions at all if you are running full-duplex. Make sure the duplex and port speed on the catalyst is hardwired -- we have had no end of troubles with the autodetect junk on catalysts. It also doesn't hurt to hardware the duplex and port speed on the UNIX boxes. If you still have problems there are a number of possibilities. If you are using discrete RJ45 ports try switching the cables as well as use a different catalyst port. If you are using telco cables - those big fat 50 or 100 pair cables that use centronics-like connectors on the catalyst side hat, you probably have an RJ45 punchdown block on the other end. These have to be Cat-5 punchdown blocks, not Cat-3 punchdown blocks. Try a different port on the punchdown block. -Matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message