MySQL 显示状态 - 活动连接数还是总连接数?

问题描述

当我运行 show status like 'Con%' 时，它会显示连接数，它是 9972，并且还在不断增长.这是活动连接数还是总连接数?

When I run show status like 'Con%' it shows the number of connections, which is 9972 and constantly growing. Is this an active number of connections or connections made in total?

推荐答案

根据 the docs，表示历史上的总数:

According to the docs, it means the total number throughout history:

连接

连接到 MySQL 服务器的尝试次数(成功与否).

The number of connection attempts (successful or not) to the MySQL server.

您可以通过 状态变量:

You can see the number of active connections either through the Threads_connected status variable:

Threads_connected

当前打开的连接数.

mysql> show status where `variable_name` = 'Threads_connected';
+-------------------+-------+
| Variable_name     | Value |
+-------------------+-------+
| Threads_connected | 4     |
+-------------------+-------+
1 row in set (0.00 sec)

... 或通过 show processlist 命令:

... or through the show processlist command:

mysql> show processlist;
+----+------+-----------------+--------+---------+------+-------+------------------+
| Id | User | Host            | db     | Command | Time | State | Info             |
+----+------+-----------------+--------+---------+------+-------+------------------+
|  3 | root | localhost       | webapp | Query   |    0 | NULL  | show processlist |
|  5 | root | localhost:61704 | webapp | Sleep   |  208 |       | NULL             |
|  6 | root | localhost:61705 | webapp | Sleep   |  208 |       | NULL             |
|  7 | root | localhost:61706 | webapp | Sleep   |  208 |       | NULL             |
+----+------+-----------------+--------+---------+------+-------+------------------+
4 rows in set (0.00 sec)

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