From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerardo Arceri Date: Fri, 03 Dec 2004 20:41:43 +0000 Subject: [LARTC] HTB High CPU Utilization Message-Id: <41B0CF87.4050008@elfarto.com.ar> MIME-Version: 1 Content-Type: multipart/mixed; boundary="------------050805050602020002010600" List-Id: To: lartc@vger.kernel.org This is a multi-part message in MIME format. --------------050805050602020002010600 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi, i'm running a Bridge/iptables firewall, with no tc filters configured CPU utilization barely reaches 1%, i had to rate limit one particular server outgoing traffic and setup a HTB scheme like this iptables -F PREROUTING -t mangle iptables -A PREROUTING -t mangle -p tcp -s 99.99.99.99 -j MARK --set-mark 2 tc qdisc del dev eth0 root tc qdisc add dev eth0 root handle 10: htb default 10 tc class add dev eth0 parent 10: classid 10:3 htb rate 1000kbit ceil 1000kbit tc filter add dev eth0 parent 10: protocol ip prio 3 handle 2 fw classid 10:3 Now i'm seeing CPU Utilization beyond 30% and load averages of 0.79, the network total bandwidth is 20Mb/s. The server is a linux kernel 2.6.7-gentoo-r8 running on a P4 1.7 Ghz. Is this normal behaviour ? is there any error in my configuration or in my kernel config ? Thanks! --------------050805050602020002010600 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi, i'm running a Bridge/iptables firewall, with no tc filters configured CPU utilization barely reaches 1%, i had to rate limit one particular server outgoing traffic and setup a HTB scheme like this

iptables -F PREROUTING -t mangle
iptables -A PREROUTING -t mangle -p tcp -s 99.99.99.99 -j MARK --set-mark 2
tc qdisc del dev eth0 root
tc qdisc add dev eth0 root handle 10: htb default 10
tc class add dev eth0 parent 10: classid 10:3 htb rate 1000kbit ceil 1000kbit
tc filter add dev eth0 parent 10: protocol ip prio 3 handle 2 fw classid 10:3

Now i'm seeing CPU Utilization beyond 30% and load averages of 0.79, the network total bandwidth is 20Mb/s.  The server is a linux kernel 2.6.7-gentoo-r8  running on a P4 1.7 Ghz.
Is this normal behaviour ? is there any error in my configuration or in my kernel config ?
Thanks!

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