From owner-freebsd-stable@FreeBSD.ORG Fri Sep 26 14:05:29 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3B5F41065694; Fri, 26 Sep 2008 14:05:29 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (bigknife-pt.tunnel.tserv9.chi1.ipv6.he.net [IPv6:2001:470:1f10:75::2]) by mx1.freebsd.org (Postfix) with ESMTP id D3D928FC1F; Fri, 26 Sep 2008 14:05:28 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from localhost.corp.yahoo.com (john@localhost [IPv6:::1]) (authenticated bits=0) by server.baldwin.cx (8.14.2/8.14.2) with ESMTP id m8QE4dH6007656; Fri, 26 Sep 2008 10:04:57 -0400 (EDT) (envelope-from jhb@freebsd.org) From: John Baldwin To: freebsd-hackers@freebsd.org Date: Fri, 26 Sep 2008 09:52:26 -0400 User-Agent: KMail/1.9.7 References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200809260952.26896.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [IPv6:::1]); Fri, 26 Sep 2008 10:04:58 -0400 (EDT) X-Virus-Scanned: ClamAV 0.93.1/8343/Fri Sep 26 05:43:08 2008 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=4.2 tests=BAYES_00,NO_RELAYS autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: freebsd-stable@freebsd.org Subject: Re: bad NFS/UDP performance X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Sep 2008 14:05:29 -0000 On Friday 26 September 2008 03:04:16 am Danny Braniss wrote: > Hi, > There seems to be some serious degradation in performance. > Under 7.0 I get about 90 MB/s (on write), while, on the same machine > under 7.1 it drops to 20! > Any ideas? > > thanks, > danny Perhaps use nfsstat to see if 7.1 is performing more on-the-wire requests? Also, if you can, do a binary search to narrow down when the regression occurred in RELENG_7. -- John Baldwin