mysql查看當前實時鏈接數

靜態查看:

 SHOW PROCESSLIST; SHOW FULL PROCESSLIST; SHOW VARIABLES LIKE '%max_connections%'; SHOW STATUS LIKE '%Connection%';

 

實時查看：

mysql> show status like 'Threads%'; +-------------------+-------+  
    | Variable_name     | Value |  
    +-------------------+-------+  
    | Threads_cached    | 58    |  
    | Threads_connected | 57    | ###這個數值指的是打開的鏈接數 | Threads_created   | 3676  |  
    | Threads_running   | 4     | ###這個數值指的是激活的鏈接數，這個數值通常遠低於connected數值 +-------------------+-------+ Threads_connected 跟show processlist結果相同，表示當前鏈接數。準確的來講，Threads_running是表明當前併發數 這是是查詢數據庫當前設置的最大鏈接數 mysql> show variables like '%max_connections%'; +-----------------+-------+  
    | Variable_name   | Value |  
    +-----------------+-------+  
    | max_connections | 100  |  
    +-----------------+-------+ 能夠在/etc/my.cnf裏面設置數據庫的最大鏈接數 max_connections = 1000