From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-x22f.google.com (mail-pa0-x22f.google.com [IPv6:2607:f8b0:400e:c03::22f]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id DBDA6201B88; Tue, 9 Jul 2013 06:09:21 -0700 (PDT) Received: by mail-pa0-f47.google.com with SMTP id kl14so5479355pab.20 for ; Tue, 09 Jul 2013 06:09:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:subject:from:to:cc:date:in-reply-to:references :content-type:x-mailer:content-transfer-encoding:mime-version; bh=tALj1xrqOlReAAXTJnaUwYw4biJp9HenVrE8l0BLF9A=; b=YSw+IsNH81k7tjesQipskbSF3H4n4tRpuz7MloYblCLcqwiUgtWTTXiQarmhwgD/v3 qqgtxc+mOyd9QU3k2Vxega0Jmf+DpP/PlKLi1NIwZAPWbfbA4RkvTicxFBcfgxNE6wwT UhS2vqlq7TcE7uLUX0jydW+xcJ0FEEUfDi6QpZ4I5XioS3DIcxKyj9W/eJ4jaRWaVlWC 2JXL8Ay2JRzh6vkZpmMkyznA8/ji2UioCNPl1UjGhOfcEULWDgUipIYy+IW3qgaX+/8h q161IQz4k6O0SQnguNCVOQSl1rzzgEnua0rANs7s2c4MLxlyCHANN5v5FOa5hyzSLZ2X 3IkQ== X-Received: by 10.68.240.72 with SMTP id vy8mr26249005pbc.161.1373375361344; Tue, 09 Jul 2013 06:09:21 -0700 (PDT) Received: from [172.19.248.202] ([172.19.248.202]) by mx.google.com with ESMTPSA id at1sm28238025pbc.10.2013.07.09.06.09.20 for (version=SSLv3 cipher=RC4-SHA bits=128/128); Tue, 09 Jul 2013 06:09:20 -0700 (PDT) Message-ID: <1373375359.4979.146.camel@edumazet-glaptop> From: Eric Dumazet To: Dave Taht Date: Tue, 09 Jul 2013 06:09:19 -0700 In-Reply-To: References: <1373223178.486913695@apps.rackspace.com> <871u79x9kb.fsf@toke.dk> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Cc: Toke =?ISO-8859-1?Q?H=F8iland-J=F8rgensen?= , codel@lists.bufferbloat.net, cerowrt-devel@lists.bufferbloat.net Subject: Re: [Cerowrt-devel] [Codel] happy 4th! 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: Tue, 09 Jul 2013 13:09:22 -0000 On Mon, 2013-07-08 at 23:32 -0700, Dave Taht wrote: > and... unlike in the past where tcp was being optimized for > supercomputer center to supercomputer center, the vast majority of tcp > related work is now coming out of google, who are optimizing for short > transfers over short rtts. That's not really true, we work on many issues, including long transfers and long rtt. Beware of tools reproducing latencies, reorders, drops, because they often add unexpected bugs. One has to be extra careful and check tcpdumps or things like that to double check tools are not buggy.