Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761127AbYGaAHr (ORCPT ); Wed, 30 Jul 2008 20:07:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760893AbYGaAHN (ORCPT ); Wed, 30 Jul 2008 20:07:13 -0400 Received: from rv-out-0506.google.com ([209.85.198.239]:31288 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758460AbYGaAHL (ORCPT ); Wed, 30 Jul 2008 20:07:11 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references:x-google-sender-auth; b=OppC1FGDW9KXIxwakp3dk2H1bGvjv38FUnM3PgXVKnz7jSAMwOai6SiA9bZfGiq/8v nsbq1BbgFSkhElhuAW0C88MM83tPmSeeubO4hfXFjjXQ9aL7mOApncukAunBYyqByl3H pd3o0RqxtXi4Dmpo/wb80AV57yACpiWrO7icM= Message-ID: <75b66ecd0807301707x9fbcfe6na91abd70c2d7d652@mail.gmail.com> Date: Wed, 30 Jul 2008 20:07:10 -0400 From: "Lee Revell" To: shuey@purdue.edu Subject: Re: high latency NFS Cc: linux-kernel@vger.kernel.org In-Reply-To: <200807241311.31457.shuey@purdue.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200807241311.31457.shuey@purdue.edu> X-Google-Sender-Auth: 6d3e417fc21ac778 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 824 Lines: 17 On Thu, Jul 24, 2008 at 1:11 PM, Michael Shuey wrote: > NFS mount is tcp, version 3. rsize/wsize are 32k. Both client and server > have had tcp_rmem, tcp_wmem, wmem_max, rmem_max, wmem_default, and > rmem_default tuned - tuning values are 12500000 for defaults (and minimum > window sizes), 25000000 for the maximums. Inefficient, yes, but I'm not > concerned with memory efficiency at the moment. Try using UDP. I had to move a 10TB+ data warehouse over a 100Mbit WAN link not long ago and this was the only method that gave me close to wire speed. Lee -- 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/