From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: [PATCH iproute2 ] PIE: Proportional Integral controller Enhanced Date: Thu, 9 Jan 2014 22:52:17 -0800 Message-ID: <20140109225217.3269b74a@nehalam.linuxnetplumber.net> References: <1389160839-31060-1-git-send-email-subramanian.vijay@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, shemminger@vyatta.com, Mythili Prabhu , Dave Taht To: Vijay Subramanian Return-path: Received: from mail-pb0-f42.google.com ([209.85.160.42]:45465 "EHLO mail-pb0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750808AbaAJGwU (ORCPT ); Fri, 10 Jan 2014 01:52:20 -0500 Received: by mail-pb0-f42.google.com with SMTP id uo5so4060026pbc.15 for ; Thu, 09 Jan 2014 22:52:20 -0800 (PST) In-Reply-To: <1389160839-31060-1-git-send-email-subramanian.vijay@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 7 Jan 2014 22:00:39 -0800 Vijay Subramanian wrote: > From: Vijay Subramanian > > Proportional Integral controller Enhanced (PIE) is a scheduler to address the > bufferbloat problem. > > We present here a lightweight design, PIE(Proportional Integral controller > Enhanced) that can effectively control the average queueing latency to a target > value. Simulation results, theoretical analysis and Linux testbed results have > shown that PIE can ensure low latency and achieve high link utilization under > various congestion situations. The design does not require per-packet > timestamp, so it incurs very small overhead and is simple enough to implement > in both hardware and software. " > > For more information, please see technical paper about PIE in the IEEE > Conference on High Performance Switching and Routing 2013. A copy of the paper > can be found at ftp://ftpeng.cisco.com/pie/. > > Please also refer to the IETF draft submission at > http://tools.ietf.org/html/draft-pan-tsvwg-pie-00 > > All relevant code, documents and test scripts and results can be found at > ftp://ftpeng.cisco.com/pie/. > > For problems with the iproute2/tc or Linux kernel code, please contact Vijay > Subramanian (vijaynsu@cisco.com or subramanian.vijay@gmail.com) Mythili Prabhu > (mysuryan@cisco.com) > > Signed-off-by: Vijay Subramanian > Signed-off-by: Mythili Prabhu > CC: Dave Taht On the net-next-3.13 branch to be held until next merge window