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MySQL 5.7 Reference Manual
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MySQL 5.7 Reference Manual  /  ...  /  The latest_file_io and x$latest_file_io Views The latest_file_io and x$latest_file_io Views

These views summarize file I/O activity, grouped by file and thread. By default, rows are sorted with most recent I/O first.

The latest_file_io and x$latest_file_io views have these columns:

  • thread

    For foreground threads, the account associated with the thread (and port number for TCP/IP connections). For background threads, the thread name and thread ID

  • file

    The file path name.

  • latency

    The wait time of the file I/O event.

  • operation

    The type of operation.

  • requested

    The number of data bytes requested for the file I/O event.

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