Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264116AbUDRFBo (ORCPT ); Sun, 18 Apr 2004 01:01:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264118AbUDRFBo (ORCPT ); Sun, 18 Apr 2004 01:01:44 -0400 Received: from florence.buici.com ([206.124.142.26]:40576 "HELO florence.buici.com") by vger.kernel.org with SMTP id S264116AbUDRFBn (ORCPT ); Sun, 18 Apr 2004 01:01:43 -0400 Date: Sat, 17 Apr 2004 22:01:41 -0700 From: Marc Singer To: Trond Myklebust Cc: Marc Singer , linux-kernel@vger.kernel.org Subject: Re: NFS and kernel 2.6.x Message-ID: <20040418050141.GA19414@flea> References: <20040415185355.1674115b.akpm@osdl.org> <1082084048.7141.142.camel@lade.trondhjem.org> <20040416045924.GA4870@linuxace.com> <1082093346.7141.159.camel@lade.trondhjem.org> <1082225747.2580.18.camel@lade.trondhjem.org> <20040417183219.GB3856@flea> <1082228313.2580.25.camel@lade.trondhjem.org> <20040417222258.GA12893@flea> <1082249866.3619.43.camel@lade.trondhjem.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1082249866.3619.43.camel@lade.trondhjem.org> User-Agent: Mutt/1.5.5.1+cvs20040105i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1124 Lines: 29 On Sat, Apr 17, 2004 at 05:57:46PM -0700, Trond Myklebust wrote: > On Sat, 2004-04-17 at 15:22, Marc Singer wrote: > > I have a data point for comparison. > > > > I'm copying a 40MiB file over NFS. In five trials, the mean transfer > > times are > > > > UDP (v2): 48.5s > > TCP (v3): 52.7s > > Against what kind of server on what kind of network, with what kind of > mount options? > The above would be quite reasonable performance on a 10Mbit network > against a filer or a Linux server with the (insecure) "async" option > set. Client is a 200MHz ARM; server is a Linux host running 2.6.3 with the kernel nfs daemon; network is 100Mib. There is nothing else on the network except intermittent broadband traffic. Async is set on the server side. While I have seen much worse performance in the last couple of weeks, I cannot blame NFS when I look at the numbers. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/