MySQL 8.0 Reference Manual
MySQL 8.0 Release Notes
The following sections describe the table I/O and lock wait summary tables:
table_io_waits_summary_by_index_usage
: Table I/O waits per indextable_io_waits_summary_by_table
: Table I/O waits per tabletable_lock_waits_summary_by_table
: Table lock waits per table