[LARTC] big problem with HTB/CBQ and CPU for more than 1.700 customers

[Marek Kierdelewicz]

>Hello,

Hi there!
 

>iptables -t mangle -A POSTROUTING --dest x.x.x.x -o eth0 -j CLASSIFY
>--set-class 1:5
>iptables -t mangle -A FORWARD --src x.x.x.x -o eth1 -j CLASSIFY
>--set-class 1:5

3k iptables rules strike me as something suicidaly slow.

Try using tc hashing filters for traffic classification as described
here:
http://lartc.org/howto/lartc.adv-filter.hashing.html

If you use private addresses and NAT then you'll need IFB
(http://linux-net.osdl.org/index.php/IFB) to shape upload per client
with u32 hashing filters.

Hope that helps.

pozdrawiam,
Marek Kierdelewicz
KoBa ISP