Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965014AbWARAnf (ORCPT ); Tue, 17 Jan 2006 19:43:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965012AbWARAnf (ORCPT ); Tue, 17 Jan 2006 19:43:35 -0500 Received: from pat.uio.no ([129.240.130.16]:13274 "EHLO pat.uio.no") by vger.kernel.org with ESMTP id S965011AbWARAnd (ORCPT ); Tue, 17 Jan 2006 19:43:33 -0500 Subject: Re: Kernel 2.6.15.1 + NFS is 4 times slower than FTP!? From: Trond Myklebust To: Lee Revell Cc: Justin Piszcz , Jan Engelhardt , Alan Cox , Tomasz =?iso-8859-2?Q?K=B3oczko?= , Phil Oester , linux-kernel@vger.kernel.org, apiszcz@lucidpixels.com In-Reply-To: <1137541179.3587.10.camel@mindpipe> References: <20060117012319.GA22161@linuxace.com> <1137521483.14135.59.camel@localhost.localdomain> <1137523035.7855.91.camel@lade.trondhjem.org> <1137523991.7855.103.camel@lade.trondhjem.org> <1137524502.7855.107.camel@lade.trondhjem.org> <1137536034.19678.43.camel@mindpipe> <1137541179.3587.10.camel@mindpipe> Content-Type: text/plain Date: Tue, 17 Jan 2006 19:43:14 -0500 Message-Id: <1137544994.7855.234.camel@lade.trondhjem.org> Mime-Version: 1.0 X-Mailer: Evolution 2.4.1 Content-Transfer-Encoding: 7bit X-UiO-Spam-info: not spam, SpamAssassin (score=-2.629, required 12, autolearn=disabled, AWL 1.33, FORGED_RCVD_HELO 0.05, PLING_QUERY 0.86, RCVD_IN_SORBS_DUL 0.14, UIO_MAIL_IS_INTERNAL -5.00) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 786 Lines: 23 On Tue, 2006-01-17 at 18:39 -0500, Lee Revell wrote: > On Tue, 2006-01-17 at 18:19 -0500, Justin Piszcz wrote: > > man mount > > > > async is the default for most filesystems but the NFS standard requires > writes to be synchronous. On the server side, note. Not the client side. Justin appears to be looking at the client, whereas you are referring to an export option on the server. The client only guarantees that writes must have been committed to disk on the server when either fsync() or close() have been called. Cheers, Trond - 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/