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MySQL 8.0 Reference Manual  /  ...  /  The schema_table_statistics_with_buffer and x$schema_table_statistics_with_buffer Views

27.4.3.30 The schema_table_statistics_with_buffer and x$schema_table_statistics_with_buffer Views

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_allocatedinnodb_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.


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