From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Udayan Borkar" Date: Fri, 15 Mar 2002 20:34:57 +0000 Subject: [LARTC] Question on Linux Traffic Management Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org Hi, I have been playing with the Linux advanced traffic management and have a few questions. I have been working with a Pentium based PC with two ethernet ports. Traffic received on the first port is sent to the second port, on which CBQ is configured. I am using the Redhat 7.2 distribution with Kernel 2.4.7 1. If I create a bounded, isolated class (1:1) below the root qdisc (1:0) and set its rate (i.e. for class 1:1) to 50Mbits/sec, the actual traffic rate observed is significantly different from the configured value. Measurements were made over an interval of 15 sec to 1 minute. The bandwidth parameter of the root qdisc was set to 100Mbit/sec. Why is this happening and has anyone else encountered this behaviour? 2. The Linux Advanced Routing & Traffic Control HOWTO says that one cannot shape a flow above 1Mbit/sec accurately because the scheduling tick is 10 millisec. Is there a way to get around this to accurately shape higher rate flows? 3. Is anyone working on any other hierarchical queuing disciplines beyond CBQ and HTB? If so where can I find out more about this? Thanks, - Udayan _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/