From owner-freebsd-questions@FreeBSD.ORG Tue Dec 30 22:16:37 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 E872F1065674 for ; Tue, 30 Dec 2008 22:16:37 +0000 (UTC) (envelope-from bernard@dugas-family.org) Received: from smtp11.ispronet.com (smtp11.ispronet.com [81.28.196.233]) by mx1.freebsd.org (Postfix) with ESMTP id A19FA8FC16 for ; Tue, 30 Dec 2008 22:16:37 +0000 (UTC) (envelope-from bernard@dugas-family.org) Received: from localhost (unknown [127.0.0.1]) by smtp11.ispronet.com (Postfix) with ESMTP id 5F748B849; Tue, 30 Dec 2008 23:16:36 +0100 (CET) Received: from smtp11.ispronet.com ([127.0.0.1]) by localhost (smtp11.ispronet.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 45383-01; Tue, 30 Dec 2008 23:16:27 +0100 (CET) Received: from [192.168.1.50] (unknown [81.28.194.61]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp11.ispronet.com (Postfix) with ESMTP; Tue, 30 Dec 2008 23:16:27 +0100 (CET) Message-ID: <495A9E34.6080009@dugas-family.org> Date: Tue, 30 Dec 2008 23:18:28 +0100 From: Bernard Dugas User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; fr-FR; rv:1.7) Gecko/20040616 X-Accept-Language: fr,en MIME-Version: 1.0 To: Matthew Seaman References: <20081216094719.EDCEE1065675@hub.freebsd.org> <495930E4.1030501@dugas-family.org> <20081229230115.F68805@wojtek.tensor.gdynia.pl> <495A8D31.8060406@dugas-family.org> <495A9432.5070401@infracaninophile.co.uk> In-Reply-To: <495A9432.5070401@infracaninophile.co.uk> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at ispronet.com Cc: freebsd-questions@freebsd.org, vince@unsane.co.uk 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 22:16:38 -0000 Matthew Seaman wrote: > It's 'mtu NNNN' not '-mtu NNNN' I'm confused, thanks so much ! There was no option without - in my old unix time ;-) Thanks to you, it seems that my max mtu is 9216 on em : client9# ifconfig em1 mtu 9216 client9# ifconfig em1 mtu 9217 ifconfig: ioctl (set mtu): Invalid argument Max mtu is changing on re : nfsserver# ifconfig re0 mtu 1504 nfsserver# ifconfig re0 mtu 1505 ifconfig: ioctl (set mtu): Invalid argument But another re accept 7422 : client6# ifconfig re0 mtu 7422 client6# ifconfig re0 mtu 7423 ifconfig: ioctl (set mtu): Invalid argument It seems that only testing can give the limit, this is not documented. Best regards, -- Bernard DUGAS Mobile +33 615 333 770