From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from g1t0026.austin.hp.com (g1t0026.austin.hp.com [15.216.28.33]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "smtp.hp.com", Issuer "VeriSign Class 3 Secure Server CA - G3" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id D18B4200519 for ; Fri, 27 Jan 2012 13:42:42 -0800 (PST) Received: from g1t0038.austin.hp.com (g1t0038.austin.hp.com [16.236.32.44]) by g1t0026.austin.hp.com (Postfix) with ESMTP id 39B78C00F; Fri, 27 Jan 2012 21:42:41 +0000 (UTC) Received: from [16.89.64.213] (tardy.cup.hp.com [16.89.64.213]) by g1t0038.austin.hp.com (Postfix) with ESMTP id C8E053009F; Fri, 27 Jan 2012 21:42:40 +0000 (UTC) Message-ID: <4F231A4F.1040006@hp.com> Date: Fri, 27 Jan 2012 13:42:39 -0800 From: Rick Jones User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.24) Gecko/20111109 Lightning/1.0b2 Thunderbird/3.1.16 MIME-Version: 1.0 To: Jim Gettys References: <4F21B1E8.9010504@freedesktop.org> <4F22DA7F.6090302@freedesktop.org> In-Reply-To: <4F22DA7F.6090302@freedesktop.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: bloat Subject: Re: [Bloat] Traffic patterns for AQM testing.... Bursty behaviour of video players. X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Jan 2012 21:42:43 -0000 > In the short term, I need to understand what current TCP systems > *should* do in the face of long idle periods, which invalidate the > congestion information. Is your glass half-empty and/or has a leak? Then TCP should decay or reset its cwnd while/when idle. Is your glass half-full? Then TCP should leave the cwnd alone. Both are ass-u-me-ing something about the state of the path between the sender and the receiver. rick jones