sudo apt install iperf3 iotop
ufw allow 5201
iperf3 -s # on host iperf3 -c <host> # on client
iotop
sudo apt remove speedtest-cli
sudo apt install python3-pip
sudo pip3 install speedtest_cli speedtest-cli
ionice -c scheduling_class -n priority_nice_value command ionice -c 3 cp /home/user/largefile /Backups