These views summarize table statistics, including InnoDB buffer pool statistics. By default, rows are sorted by descending total wait time (tables with most contention first).
These views user a helper view, x$ps_schema_table_statistics_io.
The schema_table_statistics_with_buffer and x$schema_table_statistics_with_buffer views have these columns:
table_schema
The schema that contains the table.
table_name
The table name.
rows_fetched
The total number of rows read from the table.
fetch_latency
The total wait time of timed read I/O events for the table.
rows_inserted
The total number of rows inserted into the table.
insert_latency
The total wait time of timed insert I/O events for the table.
rows_updated
The total number of rows updated in the table.
update_latency
The total wait time of timed update I/O events for the table.
rows_deleted
The total number of rows deleted from the table.
delete_latency
The total wait time of timed delete I/O events for the table.
io_read_requests
The total number of read requests for the table.
io_read
The total number of bytes read from the table.
io_read_latency
The total wait time of reads from the table.
io_write_requests
The total number of write requests for the table.
io_write
The total number of bytes written to the table.
io_write_latency
The total wait time of writes to the table.
io_misc_requests
The total number of miscellaneous I/O requests for the table.
io_misc_latency
The total wait time of miscellaneous I/O requests for the table.
innodb_buffer_allocated
The total number of InnoDB buffer bytes allocated for the table.
innodb_buffer_data
The total number of InnoDB data bytes allocated for the table.
innodb_buffer_free
The total number of InnoDB nondata bytes allocated for the table (innodb_buffer_allocated − innodb_buffer_data).
innodb_buffer_pages
The total number of InnoDB pages allocated for the table.
innodb_buffer_pages_hashed
The total number of InnoDB hashed pages allocated for the table.
innodb_buffer_pages_old
The total number of InnoDB old pages allocated for the table.
innodb_buffer_rows_cached
The total number of InnoDB cached rows for the table.