Return-Path: linux-nfs-owner@vger.kernel.org Received: from fieldses.org ([174.143.236.118]:57779 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754336Ab2BHSby (ORCPT ); Wed, 8 Feb 2012 13:31:54 -0500 Date: Wed, 8 Feb 2012 13:31:51 -0500 From: "J. Bruce Fields" To: Jim Rees Cc: "Myklebust, Trond" , "linux-nfs@vger.kernel.org" Subject: Re: [RFC PATCH 1/2] NFSv4.1: Convert slotid from u8 to u32 Message-ID: <20120208183151.GA14316@fieldses.org> References: <1328576237-7362-1-git-send-email-Trond.Myklebust@netapp.com> <20120208162322.GA13315@fieldses.org> <1328722042.3234.13.camel@lade.trondhjem.org> <20120208174901.GA28564@umich.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20120208174901.GA28564@umich.edu> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Wed, Feb 08, 2012 at 12:49:01PM -0500, Jim Rees wrote: > Myklebust, Trond wrote: > > 10GigE + high latencies is exactly where we're seeing the value. Andy > has been working with the high energy physics community doing NFS > traffic between the US and CERN... > > CITI to CERN is just over 120ms. I don't know what it would be from Andy's > house. Does he have 10G at home yet? That still seems short of what you'd need to get a 255MB bandwidth-delay product. I'm just curious what the experiment is here and whether there's a possibility the real problem is elsewhere. --b.