From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Tzeh Yeu Leang" Date: Wed, 04 Apr 2001 07:13:34 +0000 Subject: [LARTC] Problem with bandwidth 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 all, Here is my setup: Host1 ---> Router ----> Host2 When i run ttcp -t on Host1 while ttcp -r in Host2, the bandwidth that i can get is about 860 Kbytes/s, which is less than 7Mbps. But i am using NIC 10Mbps for all machines. Why is that so? Currently, i am experimenting with the example efcbq. I am using MGEN (a UDP traffic generator) to send 2 flows of traffic (EF and BE) from Host1 to Host2. I allocate EF 3Mbit and BE 7Mbit in router. But using DREC (a receiver that comes with MGEN), i observed the bandwidth obtained by BE and EF do not tally with my tc configurations. And the sum of the total bandwidth received is about 4-5Mbps. I read somewhere in the mailing list that udp will have defragmentation problem. Another reason that i can guess is the way the software (MGEN and DREC) measure is not accurate. Any suggestions on what software i can use in order to have measurement that tally with tc configurations? Thanks. _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/