并发量上去，数据库连接池对象创建失败PDO #8
Description
:[Uncaught RuntimeException: Failed to connect the requested database: [2002] SQLSTATE[HY000] [2002] Operation timed out in //Connectors/PDOConnector.php:12
swoole 版本 4.5.9
测试工具ab 并发6000
不是数据库和swoole版本问题，用easyswoole测试没问题