From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ee0-f43.google.com (mail-ee0-f43.google.com [74.125.83.43]) (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 A8A0B21F0D3 for ; Thu, 28 Jun 2012 22:24:20 -0700 (PDT) Received: by mail-ee0-f43.google.com with SMTP id e50so1982972eek.16 for ; Thu, 28 Jun 2012 22:24:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; bh=gQ0RMcblhujnQPNPvx5pSFqVPdFDEACWglQa6JR3pvA=; b=COwKwIo1QqA/Zw0W7w6clqfdEqNRUHrQyjUBG799Sg9FUKeso82GTJ8ATjf2nYr3jJ 1WZgceb4wwHC1XsD8YefQYhBhGfbket/dAM0fvCUX3kaBa/uvZH8RMr3f743yzmDh7qt PUn0tqKgTA446tLgqGFRt6h9+C04IRH9YYYD5/DfKKPBiyOR0Btsk5qXVXAd8jt/yZPc PkYXQTevMHc+9DaZ9M6DBrWRTLwhK6TpIyszyvYp/HJll5BnrdEDMtlcoqY3Fs6QKvo9 xR0j4tXyLb+lLwVr3DM3M+LWIGjHLyiGYDdznpRp+aBoEy7IdCAWBtYuIJhAU9ScpgBF +AGw== MIME-Version: 1.0 Received: by 10.216.208.80 with SMTP id p58mr71498weo.139.1340947460230; Thu, 28 Jun 2012 22:24:20 -0700 (PDT) Received: by 10.223.103.199 with HTTP; Thu, 28 Jun 2012 22:24:20 -0700 (PDT) In-Reply-To: <1340945457.29822.7.camel@edumazet-glaptop> References: <1340903237.13187.151.camel@edumazet-glaptop> <1340907151.13187.169.camel@edumazet-glaptop> <1340945457.29822.7.camel@edumazet-glaptop> Date: Fri, 29 Jun 2012 01:24:20 -0400 Message-ID: From: Dave Taht To: Eric Dumazet Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: Nandita Dukkipati , netdev , Yuchung Cheng , codel@lists.bufferbloat.net, Matt Mathis , Neal Cardwell , David Miller Subject: Re: [Codel] [PATCH net-next] fq_codel: report congestion notification at enqueue time X-BeenThere: codel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: CoDel AQM discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Jun 2012 05:24:21 -0000 On Fri, Jun 29, 2012 at 12:50 AM, Eric Dumazet wro= te: > A router will have no use of this feature, not sure you need to spend > time trying this ;) It's not yer ordinary router... A cerowrt router has iperf, netperf/netserver from svn with congestion control switching and classification setting, rsync (with same), samba, transmission, a polipo proxy, scamper, and a legion of other network analysis tools on-board and available as optional packages. and it's used in the bufferbloat project as a thoroughly understood platform for originating, receiving, AND routing packets on a real embedded home gateway platform that end users actually use, through a decent set of drivers, on ethernet and wifi. I am always concerned when changes to the stack like GSO/GRO/BQL/fq_codel go into linux - or things like the infinite window in ECN bug from a few months back happen - as they hold promise to mutate (or explain) the statistics and analysis we've accumulated over the last year and a half. And as I'm hoping to do a major test run shortly to get some fresh statistics vs a vs fq_codel vs the old sfqred tests ( I'm looking forward to redoing this one in particular: http://www.teklibre.com/~d/bloat/hoqvssfqred.ps - ) ... and you are about to change what those stats are going to look like, under load, with this change... I kind of need to understand/track it/parse it/capture it. I've got sufficient hardware now to easily A/B things. (sorry for the noise on the lists) --=20 Dave T=E4ht