Limit tar read speed

Use cgroups mkdir -p /sys/fs/cgroup/blkio/g1 echo “8:0 1048576” > /sys/fs/cgroup/blkio/g1/blkio.throttle.read_bps_device pgrep -f tar > /sys/fs/cgroup/blkio/g1/cgroup.procs https://andrestc.com/post/cgroups-io/