Rechercher dans le manuel MySQL

27.4.3.41 The user_summary and x$user_summary Views

Contents

These views summarize statement activity, file I/O, and connections, grouped by user. By default, rows are sorted by descending total latency.

The user_summary and x$user_summary views have these columns:

  • user

    The client user name. Rows for which the USER column in the underlying Performance Schema table is NULL are assumed to be for background threads and are reported with a host name of background.

  • statements

    The total number of statements for the user.

  • statement_latency

    The total wait time of timed statements for the user.

  • statement_avg_latency

    The average wait time per timed statement for the user.

  • table_scans

    The total number of table scans for the user.

  • file_ios

    The total number of file I/O events for the user.

  • file_io_latency

    The total wait time of timed file I/O events for the user.

  • current_connections

    The current number of connections for the user.

  • total_connections

    The total number of connections for the user.

  • unique_hosts

    The number of distinct hosts from which connections for the user have originated.

  • current_memory

    The current amount of allocated memory for the user.

  • total_memory_allocated

    The total amount of allocated memory for the user.


Find a PHP function

Document created the 26/06/2006, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/mysql-rf-sys-user-summary.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:en Manuel MySQL : https://dev.mysql.com/

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.

Contents Haut