Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750733AbWEFXzO (ORCPT ); Sat, 6 May 2006 19:55:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751146AbWEFXzO (ORCPT ); Sat, 6 May 2006 19:55:14 -0400 Received: from wr-out-0506.google.com ([64.233.184.234]:29240 "EHLO wr-out-0506.google.com") by vger.kernel.org with ESMTP id S1750733AbWEFXzN convert rfc822-to-8bit (ORCPT ); Sat, 6 May 2006 19:55:13 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=qrLOLU3nL9stoXigeSgHX3adxvLznvdWlNMmjY/LWyuhowXb5LBq5PE5LtuF2rPoXPx0FRM6zH7bxmmZSsUJ1Fzq3pjruLlxlAVrGWnsgvz8wEy1+grnWo0ylLhxaLyD5PB1dXN7l+ehT9bpsdYlpy7r40i+RP5NHK5N1xgd0jo= Message-ID: <9a8748490605061655oaa7e114ua5dbf47206d92fd6@mail.gmail.com> Date: Sun, 7 May 2006 01:55:12 +0200 From: "Jesper Juhl" To: "Dave Pitts" Subject: Re: How can I boost block I/O performance Cc: linux-kernel@vger.kernel.org In-Reply-To: <445CE6ED.30703@cozx.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <445CE6ED.30703@cozx.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1324 Lines: 31 On 5/6/06, Dave Pitts wrote: > Hello all: > > I've been trying some hacks to boost disk I/O performance [snip] > > This test is running several NFS clients to a RAID disk storage array. I [snip] For improving performance of NFS servers I've often had good success with increasing the 'rsize' and 'wsize' options. The default values are 4096, I personally set them to 16384 which usually helps NFS performance quite a bit. At least that's my experience. Simply add rsize=16384,wsize=16384 to the nfs mount options in /etc/fstab and see if that improves performance for you (values like 8192 and 32768 may also be worth testing, but personally I've found - at least with my setups - that 16384 seems to be the magic value). ('man 8 mount' and 'man 5 exports' also have more interresting options you may want to experiment with, but just rsize & wsize on their own should be a boost) -- Jesper Juhl Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html - 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/