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17.17.1 InnoDB Monitor Types

There are two types ofInnoDB monitor:

  • The standardInnoDB Monitor displays the following types of information:

    • Work done by the main background thread

    • Semaphore waits

    • Data about the most recent foreign key and deadlock errors

    • Lock waits for transactions

    • Table and record locks held by active transactions

    • Pending I/O operations and related statistics

    • Insert buffer and adaptive hash index statistics

    • Redo log data

    • Buffer pool statistics

    • Row operation data

  • TheInnoDB Lock Monitor prints additional lock information as part of the standardInnoDB Monitor output.