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MySQL 5.7 Reference Manual
Related Documentation Download this Manual Excerpts from this Manual The hosts Table

The hosts table contains a row for each host from which clients have connected to the MySQL server. For each host name, the table counts the current and total number of connections. The table size is autosized at server startup. To set the table size explicitly, set the performance_schema_hosts_size system variable at server startup. To disable host statistics, set this variable to 0.

The hosts table has the following columns. For a description of how the Performance Schema maintains rows in this table, including the effect of TRUNCATE TABLE, see Section 21.9.8, “Performance Schema Connection Tables”.

  • HOST

    The host from which the client connected, or NULL for an internal thread or user session that failed to authenticate.


    The current number of connections for the host.


    The total number of connections for the host.

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