Return-Path: Received: from mail-out2.uio.no ([129.240.10.58]:52939 "EHLO mail-out2.uio.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752053AbZFENy5 (ORCPT ); Fri, 5 Jun 2009 09:54:57 -0400 Subject: Re: Link performance over NFS degraded in RHEL5. -- was : Read/Write NFS I/O performance degraded by FLUSH_STABLE page flushing From: Trond Myklebust To: Tom Talpey Cc: Steve Dickson , Linux NFS Mailing List In-Reply-To: <4A2922A5.5070101@gmail.com> References: <1243615595.7155.48.camel@heimdal.trondhjem.org> <1243618500.7155.56.camel@heimdal.trondhjem.org> <1243686363.5209.16.camel@heimdal.trondhjem.org> <1243963631.4868.124.camel@heimdal.trondhjem.org> <18982.41770.293636.786518@fisica.ufpr.br> <1244049027.5603.5.camel@heimdal.trondhjem.org> <4A2902E6.2080006@RedHat.com> <4A29144A.6030405@gmail.com> <4A291D83.1000508@RedHat.com> <4A2922A5.5070101@gmail.com> Content-Type: text/plain Date: Fri, 05 Jun 2009 09:54:56 -0400 Message-Id: <1244210096.5410.35.camel@heimdal.trondhjem.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 On Fri, 2009-06-05 at 09:50 -0400, Tom Talpey wrote: > I'm not 100% clear on what you mean by removing it. Since it's > a "no_" option, removing it means that "wdelay" becomes the > default? That would certainly cause a regression for many. You've misunderstood. The current default is to _set_ 'wdelay' on all exports that do not explicitly turn it off. Trond