奇怪奇怪，怎么会启动这么多个mysql进程？

blueangel

linux 7.3+mysql做数据库，vbb论坛连接
数据库和web分开
发现mysql消耗内存很大，用top一看同时启动了10个mysqld进程
但连接的只有一个进程，其他9个那是什么？
这是怎么回事？用persist connection的影响吗？

ppop123

不要用persist connection，否则会死得很惨。

blueangel

为什么？能详细说说吗？

blueangel

明白了
First, when connecting, the function would first try to find a (persistent) link that's already open with the same host, username and password. If one is found, an identifier for it will be returned instead of opening a new connection.

Second, the connection to the SQL server will not be closed when the execution of the script ends. Instead, the link will remain open for future use (mysql_close() will not close links established by mysql_pconnect()).