Another step in my NAT performance debugging. I realized that my OpenWrt 21.02 based bcm53xx builds can't reach 940 Mb/s because I have qos-scripts installed.
It happens even with QoS interface disabled: qos.wan.enabled='0' and with QoS disabled in general: /etc/init.d/qos stop (disable & reboot don't help neither) After quite some debugging I discovered that: 1. qos-scripts selects iptables-mod-conntrack-extra 2. iptables-mod-conntrack-extra selects kmod-ipt-raw 3. kmod-ipt-raw provides iptable_raw.ko 4. iptable_raw.ko slows down NAT I can bump NAT speed from 880 Mb/s to 940 Mb/s by doing: # rmmod iptable_raw unloading the module failed # /etc/init.d/firewall stop > /dev/null 2>&1 # rmmod iptable_raw # /etc/init.d/firewall start > /dev/null 2>&1 I'm wondering if there is any good solution to that. I can't think of anything clean and generic. Handling modprobe & rmmod directly in /etc/init.d/qos sounds really hacky. Any good ideas? -- Rafał _______________________________________________ openwrt-devel mailing list [email protected] https://lists.openwrt.org/mailman/listinfo/openwrt-devel
