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MySQL 5.7 Reference Manual  /  ...  /  InnoDB Monitor Types

15.17.1 InnoDB Monitor Types

There are four types of InnoDB monitors:

  • The standard InnoDB Monitor displays the following types of information:

    • Table and record locks held by each active transaction.

    • Lock waits of a transaction.

    • Semaphore waits of threads.

    • Pending file I/O requests.

    • Buffer pool statistics.

    • Purge and change buffer merge activity of the main InnoDB thread.

  • The InnoDB Lock Monitor prints additional lock information as part of the standard InnoDB Monitor output.

  • The InnoDB Tablespace Monitor prints a list of file segments in the shared tablespace and validates the tablespace allocation data structures.

  • The InnoDB Table Monitor prints the contents of the InnoDB internal data dictionary.

    Note

    The Tablespace Monitor and Table Monitor were deprecated in MySQL 5.6.3 and have been removed in MySQL 5.7.4. For the Tablespace Monitor, equivalent functionality will be introduced before the GA release of MySQL 5.7. For the Table Monitor, equivalent information can be obtained from InnoDB INFORMATION_SCHEMA tables.

For additional information about InnoDB monitors, see:


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