Time Machine faster backups

Time Machine backup is too slow due to macOS itself be a measure limiting the frequency and memory usage of hard disk read and write have done certain restrictions, mainly to prevent the user affecting the normal use of the computer work during the backup.

You can lift the limit by the following command:

sudo sysctl debug.lowpri_throttle_enabled=0

Of course, do not forget to tune back backup is completed

sudo sysctl debug.lowpri_throttle_enabled=1

Note that no spaces on either side =