From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bifrost.lang.hm (mail.lang.hm [64.81.33.126]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by huchra.bufferbloat.net (Postfix) with ESMTPS id C1A0221F3C6 for ; Sun, 25 Oct 2015 16:22:07 -0700 (PDT) Received: from asgard.lang.hm (asgard.lang.hm [10.0.0.100]) by bifrost.lang.hm (8.13.4/8.13.4/Debian-3) with ESMTP id t9PNLxA8031558; Sun, 25 Oct 2015 15:21:59 -0800 Date: Sun, 25 Oct 2015 16:21:59 -0700 (PDT) From: David Lang X-X-Sender: dlang@asgard.lang.hm To: Jonathan Morton In-Reply-To: <545AA548-7012-4BFF-A177-3F68EB6D78D6@gmail.com> Message-ID: References: <562A5BE5.6010101@gmail.com> <12883.1445625688@sandelman.ca> <562A9611.4050403@gmail.com> <931be41d-68b7-4fea-9d4e-14bf1636e9bc@reed.com> <545AA548-7012-4BFF-A177-3F68EB6D78D6@gmail.com> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="680960-1094034069-1445815324=:8074" Cc: cerowrt-devel@lists.bufferbloat.net Subject: Re: [Cerowrt-devel] Problems testing sqm X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Oct 2015 23:22:30 -0000 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --680960-1094034069-1445815324=:8074 Content-Type: TEXT/PLAIN; charset=utf-8; format=flowed Content-Transfer-Encoding: 8BIT On Sat, 24 Oct 2015, Jonathan Morton wrote: >> On 24 Oct, 2015, at 19:34, David P. Reed wrote: >> >> Not trying to haggle. Just pointing out that this test configuration has a very short RTT. maybe too short for our SQM to adjust to. > > It should still get the bandwidth right. When it does, we’ll know that the setup is correct. bandwidth throttling is actually a much harder thing to do well under all conditiions than eliminating bufferbloat. David Lang --680960-1094034069-1445815324=:8074--