InnoDB Page Cleaner Thread
The InnoDB Page Cleaner Thread is an InnoDB background thread that flushes dirty pages from the InnoDB Buffer Pool to disk. Prior MySQL 5.6 this action was performed by the InnoDB Master Thread.
SQL> SELECT thread_id, name, type
FROM performance_schema.threads
WHERE name LIKE 'thread/innodb/page%'
OR name LIKE 'thread/innodb/srv_master%';
+-----------+-----------------------------------+------------+
| thread_id | name | type | …
