Ubuntu instance qdisc not work

Content

first, run command echo "net.core.default_qdisc = fq" >> /etc/sysctl.conf

then reboot，run command tc qdisc show

there should be something like qdisc fq etc.

but it's still shows qdisc pfifo_fast, so the qdisc not work.

 

Version

Canonical-Ubuntu-20.04-aarch64-2021.05.13-0

Code Snippet

echo "net.core.default_qdisc = fq" >> /etc/sysctl.conf
reboot
tc qdisc show