From owner-freebsd-questions@FreeBSD.ORG Tue Dec 30 14:07:21 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CA356106573B for ; Tue, 30 Dec 2008 14:07:21 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl [IPv6:2001:4070:101:2::1]) by mx1.freebsd.org (Postfix) with ESMTP id 2F0D58FC18 for ; Tue, 30 Dec 2008 14:07:19 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1]) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3) with ESMTP id mBUE7EX0088246; Tue, 30 Dec 2008 15:07:14 +0100 (CET) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from localhost (wojtek@localhost) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3/Submit) with ESMTP id mBUE7DMm088223; Tue, 30 Dec 2008 15:07:14 +0100 (CET) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Date: Tue, 30 Dec 2008 15:07:12 +0100 (CET) From: Wojciech Puchar To: Michel Talon In-Reply-To: <20081230110334.GA43765@lpthe.jussieu.fr> Message-ID: <20081230150604.Q87347@wojtek.tensor.gdynia.pl> References: <20081230110334.GA43765@lpthe.jussieu.fr> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-questions@freebsd.org Subject: Re: Optimising NFS for system files X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Dec 2008 14:07:23 -0000 > As to NFS speed, you should experiment with NFS on TCP and run a large > number of nfsd on the server (see nfs_server_flags in rc.conf). For > example -n 6 or -n 8. Maybe also experiment with the readsize and > writesize. Anyways, i don't think you can expect the same throughput > via NFS (say 10 MB/s, or more on Gig ethernet) as on a local disk anyway even relatively slow computer (like pentium 200) can easily saturate fast ethernet. mostly network speed is the limit. there is slowdown because network introduces slight delay, but few ms at most if network is made properly