btrfs slows down system

On my desktop the btrfs process sometimes goes up to 13% and the system is completely unresponsive for a while. Can I do something to avoid this behavior?


There’s some Btrfs “housekeeping” which is executed by means of system cron jobs located in “/etc/cron.weekly/” and “/etc/cron.monthly/”.

You may care to check if one of these jobs is executing whenever you experience that the system has become unresponsive.

  • To check if a cron job has run, you need to take a look in the systemd journal:
# journalctl --this-boot | grep -i 'cron'