Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265550AbUALOk2 (ORCPT ); Mon, 12 Jan 2004 09:40:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266181AbUALOk2 (ORCPT ); Mon, 12 Jan 2004 09:40:28 -0500 Received: from mpc-26.sohonet.co.uk ([193.203.82.251]:200 "EHLO moving-picture.com") by vger.kernel.org with ESMTP id S265550AbUALOk0 (ORCPT ); Mon, 12 Jan 2004 09:40:26 -0500 Message-ID: <4002B1D9.872714FE@moving-picture.com> Date: Mon, 12 Jan 2004 14:40:25 +0000 From: James Pearson Organization: Moving Picture Company X-Mailer: Mozilla 4.7 [en] (X11; I; IRIX64 6.5 IP30) X-Accept-Language: en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org CC: Trond Myklebust Subject: Re: 2.6.0 NFS-server low to 0 performance Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Disclaimer: This email and any attachments are confidential, may be legally X-Disclaimer: privileged and intended solely for the use of addressee. If you X-Disclaimer: are not the intended recipient of this message, any disclosure, X-Disclaimer: copying, distribution or any action taken in reliance on it is X-Disclaimer: strictly prohibited and may be unlawful. If you have received X-Disclaimer: this message in error, please notify the sender and delete all X-Disclaimer: copies from your system. X-Disclaimer: X-Disclaimer: Email may be susceptible to data corruption, interception and X-Disclaimer: unauthorised amendment, and we do not accept liability for any X-Disclaimer: such corruption, interception or amendment or the consequences X-Disclaimer: thereof. Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1179 Lines: 28 Trond Myklebust writes: > P? lau , 10/01/2004 klokka 11:08, skreiv Andi Kleen: > > Trond Myklebust writes: > > > > > The correct solution to this problem is (b). I.e. we convert mount to > > > use TCP as the default if it is available. That is consistent with what > > > all other modern implementations do. > > > > Please do that. Fragmented UDP with 16bit ipid is just russian roulette at > > today's network speeds. > > I fully agree. > > Chuck Lever recently sent an update for the NFS 'mount' utility to > Andries. Among other things, that update changes this default. We're > still waiting for his comments. If mount defaults to trying TCP first then UDP if the TCP mount fails, should there be separate options for [rw]size depending on what type of mount actually takes place? e.g. 'ursize' and 'uwsize' for UDP and 'trsize' and 'twsize' for TCP ? James Pearson - 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/