From: Orion Poplawski Subject: Re: Client performance questions Date: Thu, 13 Dec 2007 17:07:26 -0700 Message-ID: References: <0a15723c4b267d4eb8b5ad05800315c0@swip.net> <1197328226.25938.7.camel@heimdal.trondhjem.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed To: linux-nfs@vger.kernel.org Return-path: Received: from main.gmane.org ([80.91.229.2]:40720 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934966AbXLNAHi (ORCPT ); Thu, 13 Dec 2007 19:07:38 -0500 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1J2y5U-0005FL-0q for linux-nfs@vger.kernel.org; Fri, 14 Dec 2007 00:07:32 +0000 Received: from inferno.cora.nwra.com ([65.44.101.162]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 14 Dec 2007 00:07:32 +0000 Received: from orion by inferno.cora.nwra.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 14 Dec 2007 00:07:32 +0000 In-Reply-To: <1197328226.25938.7.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: Trond Myklebust wrote: > > Have you tried increasing the value > in /proc/sys/fs/nfs/nfs_congestion_kb ? Well, I just came across this message while trying to improve NFS performance locally. On my F8 client, it is set to 30400 by default. Changing to 60800 kills performance. Writes go from ~20MB/s to ~5MB/s, reads from ~80MB/s to ~47MB/s as measured by bonnie++. Expected? -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA/CoRA Division FAX: 303-415-9702 3380 Mitchell Lane orion@cora.nwra.com Boulder, CO 80301 http://www.cora.nwra.com