for cpu_dir in /sys/devices/system/cpu/cpu[0-9]* do online_file="$cpu_dir"/online [ -f "$online_file" ] && [ "$(cat "$online_file")" -eq 0 ] && continue file="$cpu_dir"/cpufreq/scaling_governor [ -f "$file" ] && echo "performance" > "$file" done dmsetup remove_all wipefs -a --force /dev/sda1 mkfs -t btrfs /dev/sda1 mkdir -p /fs/sda1 mount -t btrfs /dev/sda1 /fs/sda1 "mkdir" "-p" "/mnt/stress-ng" "mount" "/dev/sda1" "/mnt/stress-ng" "stress-ng" "--timeout" "30" "--times" "--verify" "--metrics-brief" "--sequential" "9" "--class" "filesystem" "--exclude" "spawn,exec,swap"