MySQL event scheduler waiting on empty queue since server restarted 12 days ago

I noticed a process on the server which has been running for more than 12 days, which I think coincides with the last time MySQL was restarted.

mysql> SHOW FULL PROCESSLIST;  +---------+-----------------+-----------+------+---------+---------+------------------------+-----------------------+ | Id      | User            | Host      | db   | Command | Time    | State                  | Info                  | +---------+-----------------+-----------+------+---------+---------+------------------------+-----------------------+ |       5 | event_scheduler | localhost | NULL | Daemon  | 1098372 | Waiting on empty queue | NULL                  | | 1774483 | root            | localhost | NULL | Query   |       0 | starting               | SHOW FULL PROCESSLIST | +---------+-----------------+-----------+------+---------+---------+------------------------+-----------------------+ 2 rows in set (0.00 sec) 

There are no events, and I haven’t attempted to created any.

mysql> SELECT * FROM information_schema.EVENTS;  Empty set (0.00 sec) 

This is actively using up to 8% of my server’s CPU.

Is there a way of determining what this is, or why it was started? Will this try to run every time I restart MySQL? If so, what is it ‘waiting’ for and do I need to tweak my configuration at all to prevent this?

MySQL 8.0.21