From mboxrd@z Thu Jan 1 00:00:00 1970 From: lihpc@Legend.com Date: Wed, 06 Nov 2002 14:07:54 +0000 Subject: [LARTC] help, strange question about tcp and udp traffic control? 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 ; +--------+ +-----------+ +--------+ | server |---------- | linux box |---------------------| Client | +--------+ +-----------+ +--------+ MY script: tc-htb3 qdisc del dev eth1 root ipchains -F tc-htb3 qdisc add dev eth1 root handle 10: htb default 20 r2q 40 tc-htb3 class add dev eth1 parent 10: classid 10:1 htb rate 50Mbit burst 2000 tc-htb3 class add dev eth1 parent 10:1 classid 10:100 htb rate 12mbit ceil 13mbit prio 1 tc-htb3 class add dev eth1 parent 10:1 classid 10:20 htb rate 38mbit ceil 50Mbit prio 7 ipchains -A fw -s 10.1.1.1 -d 10.1.5.1 -m 100 ipchains -A fw -s 0.0.0.0 -d 0.0.0.0 -j ACCEPT tc-htb3 filter add dev eth1 protocol ip parent 10:0 prio 1 handle 100 fw classid 10:100 I've find one strange question about traffic control when sending udp data and tcp data. Could you explain it ? thanks question: WHEN I measure maximum UDP bandwidth by using "Iperf -1.6 -s -u" in server host and "iperf-1.6 -c -u -b 50m" in client host, the bandwidth is 12.1mbit. OK. work well. BUT WHEN I measure maximum TCP bandwidth by using"Iperf -1.6 -s " in server host and "iperf-1.6 -c " in client host, the bandwidth is only 3.1mbit. WHY ? haipe _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/