From owner-freebsd-hackers Wed Nov 28 4:45:23 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from shiva.jussieu.fr (shiva.jussieu.fr [134.157.0.129]) by hub.freebsd.org (Postfix) with ESMTP id 7ADCC37B416 for ; Wed, 28 Nov 2001 04:45:18 -0800 (PST) Received: from parthe.lpthe.jussieu.fr (parthe.lpthe.jussieu.fr [134.157.10.1]) by shiva.jussieu.fr (8.12.1/jtpda-5.4) with ESMTP id fASCjHTQ068809 for ; Wed, 28 Nov 2001 13:45:17 +0100 (CET) Received: from niobe.lpthe.jussieu.fr (l83wxh0mkpzagpyu@niobe.lpthe.jussieu.fr [134.157.10.41]) by parthe.lpthe.jussieu.fr (8.11.1/jtpda-5.3.1) with ESMTP id fASCjHd01389 for ; Wed, 28 Nov 2001 13:45:17 +0100 (MET) Received: (from talon@localhost) by niobe.lpthe.jussieu.fr (8.11.6/8.11.6) id fASCjGB58043 for freebsd-hackers@freebsd.org; Wed, 28 Nov 2001 13:45:16 +0100 (CET) (envelope-from talon) Date: Wed, 28 Nov 2001 13:45:16 +0100 From: Michel TALON To: freebsd-hackers@freebsd.org Subject: Re: FreeBSD performing worse than Linux? Message-ID: <20011128134516.A57977@lpthe.jussieu.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Someone recently submitted a PR about TCP based NFS being significantly slower under 4.X. I wonder if it could be related? http://www.freebsd.org/cgi/query-pr.cgi?pr=misc/32141 There is quite a lot of detail in the PR and the submitter has no trouble reproducing the problem. For what it is worth i have exchanged mail with Alexander Haderer the author of the PR, and no, i have not seen nor reproduced his problem. I have done NFS exchanges between FreeBSD machines, and with Linux machines with NFS V3/TCP started by amd, since it was his problem, and all my speeds have been of the order of nominal speed (10 Mb/s and 100 Mb/s). On FreeBSD i am using FreeBSD 4.4-STABLE #0: Wed Oct 3 the NIC's are Intel 100 Mb/s 3Com 100 Mb/s and a D-Link 10 Mb/s on a laptop connected to a 3Com switch. No special tuning related to newreno. I have also downloaded a lot of things via ftp, locally and non locally and have observed no special slowing down. In particular i downloaded via ftp to a Linux box with a 100Mb/s 3Com card a whole 600Mb iso image at nominal wire speed. The Linux boxes run the latest RedHat. Here is also a ftp test to a Solaris box: 8727260 bytes received in 0.92 seconds (9275.56 Kbytes/s) As far as i can see always very correct speeds. This is extremely strange since Alexander Haderer was very aware of the half-duplex vs full-duplex issues and triple checked his installation. The only thing i have not checked is connection to a box running old version of FreeBSD, since i don't have one. -- Michel TALON To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message