kworker leftovers

Monday, 19 September 2022

Fedora 35, not fully up-to-date

I run a SiliconDust tuner that converts OTA TV to mp2, which I'm then
able to play back using mplayer. An hard-wired ethernet connection is
used between the tuner and the main CPU.

I notice that there are leftover kworker processes. They are mostly idle
and only a few have non-zero time, and then at most only a couple of
seconds.

For example, 
  87547 ?        I      0:00 [kworker/u16:1-phy0]
  87554 ?        I      0:00 [kworker/7:2-events]
  87555 ?        I      0:00 [kworker/5:2-events]
  87556 ?        I      0:00 [kworker/u16:2-btrfs-endio-write]
  87557 ?        I      0:00 [kworker/u16:3-btrfs-delalloc]
  87558 ?        I      0:00 [kworker/u16:5-btrfs-endio-write]
  87559 ?        I      0:00 [kworker/u16:7-events_unbound]
  87560 ?        I      0:00 [kworker/u16:9-btrfs-freespace-write]
  87561 ?        I      0:00 [kworker/u16:10]
  87626 ?        I<     0:00 [kworker/u17:1]

The leftover processes seem to vanish when the system is suspended.

Should I be concerned? In particular,  I was not aware that I had
installed the btrfs filesystem.

Thanks.