From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: [LARTC] how to change classful netem loss probability? Date: Fri, 28 Apr 2006 10:24:21 -0700 Message-ID: <20060428102421.7d304ca6@localhost.localdomain> References: <444FF846.7050600@cmu.edu> <32923.128.2.140.234.1146187103.squirrel@128.2.140.234> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: "George Nychis" , lartc@mailman.ds9a.nl, netdev@vger.kernel.org Return-path: Received: from smtp.osdl.org ([65.172.181.4]:13476 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1030461AbWD1RY1 (ORCPT ); Fri, 28 Apr 2006 13:24:27 -0400 To: "George P Nychis" In-Reply-To: <32923.128.2.140.234.1146187103.squirrel@128.2.140.234> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Loss was broken, patch sent. The following works now: # tc qdisc add dev eth1 root handle 1:0 netem loss 20% # tc qdisc add dev eth1 parent 1:1 handle 10: tbf \ rate 256kbit buffer 1600 limit 3000 # ping -f -c 1000 shell 1000 packets transmitted, 781 received, 21% packet loss, time 3214ms rtt min/avg/max/mdev = 0.187/0.398/3.763/0.730 ms, ipg/ewma 3.217/0.538 ms # tc qdisc chang dev eth1 handle 1: netem loss 1% # ping -f -c 1000 shell 1000 packets transmitted, 990 received, 1% packet loss, time 2922ms rtt min/avg/max/mdev = 0.187/2.739/3.298/0.789 ms, ipg/ewma 2.924/2.084 ms