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MySQL 5.6 Reference Manual  /  ...  /  InnoDB Monitor Types

14.17.1 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.


    The Tablespace Monitor and Table Monitor are deprecated and will be removed in a future MySQL release. Similar information for the Table Monitor can be obtained from InnoDB INFORMATION_SCHEMA tables. See Section 21.29, “InnoDB INFORMATION_SCHEMA Tables”.

For additional information about InnoDB monitors, see:

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