MariaDB starting with 5.2

MariaDB 5.2 introduced the User Statistics feature.

Syntax

SHOW USER_STATISTICS

Description

The SHOW USER_STATISTICS statement was introduced in MariaDB 5.2 as part of the User Statistics feature. It was removed as a separate statement in MariaDB 10.1.1, but effectively replaced by the generic SHOW information_schema_table statement. The Information Schema USER_STATISTICS Table table holds statistics about user activity. You can use this table to find out such things as which user is causing the most load and which users are being abusive. You can also use this table to measure how close to capacity the server may be.

The userstat system variable must be set to 1 to activate this feature. See the User Statistics and Information Schema USER_STATISTICS Table articles for more information.

Example

From MariaDB 10.0:

SHOW USER_STATISTICS\G
*************************** 1. row ***************************
                  User: root
     Total_connections: 1
Concurrent_connections: 0
        Connected_time: 3297
             Busy_time: 0.14113400000000006
              Cpu_time: 0.017637000000000003
        Bytes_received: 969
            Bytes_sent: 22355
  Binlog_bytes_written: 0
             Rows_read: 10
             Rows_sent: 67
          Rows_deleted: 0
         Rows_inserted: 0
          Rows_updated: 0
       Select_commands: 7
       Update_commands: 0
        Other_commands: 0
   Commit_transactions: 1
 Rollback_transactions: 0
    Denied_connections: 0
      Lost_connections: 0
         Access_denied: 0
         Empty_queries: 7

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