环境A访问正常，环境B访问时慢时快，通过打印php-fpm的慢日志
请问是哪些原因导致？
图上传不了，直接复制：
[06-Dec-2017 14:07:54] [pool www] pid 8583
sc
[0x00007fce932ffc38] __construct() /web/ThinkPHP/Library/Think/Db/Driver.class.php:103
[0x00007fce932ff698] connect() /web/ThinkPHP/Library/Think/Db/Driver.class.php:1075
[0x00007fce932ff410] initConnect() /web/ThinkPHP/Library/Think/Db/Driver/Mysql.class.php:47
[0x00007fce932fec08] getFields() /web/ThinkPHP/Library/Think/Model.class.php:134
[0x00007fce932fe1f8] flush() /web/ThinkPHP/Library/Think/Model.class.php:122
[0x00007fce932fde48] _checkTableInfo() /web/ThinkPHP/Library/Think/Model.class.php:1454
[0x00007fce932fd8b0] db() /web/ThinkPHP/Library/Think/Model.class.php:97
[0x00007fce932fd3e8] __construct() /web/ThinkPHP/Common/functions.php:588
[0x00007fce932fcc50] D() /web/Application/Home/Model/UserNeinfoModel.class.php:11
[0x00007fce932fca28] __construct() /web/ThinkPHP/Common/functions.php:588
[0x00007fce932fc290] D() /web/Application/Home/Controller/IndexController.class.php:645
[0x00007fff39126b50] getMemberList() unknown:0
[0x00007fce932fbe90] invoke() /web/ThinkPHP/Library/Think/App.class.php:173
[0x00007fce932fafb0] invokeAction() /web/ThinkPHP/Library/Think/App.class.php:110
[0x00007fce932fa4c0] exec() /web/ThinkPHP/Library/Think/App.class.php:204
[0x00007fce932fa220] run() /web/ThinkPHP/Library/Think/Think.class.php:120
[0x00007fce932f8a60] start() /web/ThinkPHP/ThinkPHP.php:97
[0x00007fce932f7378] +++ dump failed
追踪下来，是这句话导致：
$this->li
tp框架用pdo连接远程阿里云db，环境A是正常，环境B又是不正常
最佳答案
