php 通过 pdo 长连接 链接pgsql 但是pgsql连接数会不断增加 而不是复用一个链接
现在问题是，用pdo的做的长连接链接的pgsql，但是每次访问页面pgsql的链接数都会不断增加，而不是去用缓存好的连接，并且当一个用户操作时会涨到11个左右 就不会继续增加，然后再多一个用户访问连接数又会增加增加到19个左右又不增加了，再增加个用户会涨到20多个。求大神们支援
//数据库链接代码 db.class.php
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/** * 数据库构造函数 */ public function __construct() { // $this->memcache = $this->getMemecacheObject(); /** 单一实例 PDO对象 */ if (!self::$PDOInstance) { $this->config = json_decode(file_get_contents(ROOT_ADDR."/private/config/db.json"), true);
$config = $this->config; $host = $config["data_base"]["db_host"]; $dbname = $config["data_base"]["db_name"]; $port = $config["data_base"]["db_port"]; $username = $config["data_base"]["db_user"]; $password = $config["data_base"]["db_pwd"];
if ($config["data_base"]["db_host"] != 'localhost') { $hosturl = "host=$host;"; }
try { self::$PDOInstance = new PDO("pgsql:" . $hosturl . "port=$port;" . "dbname=$dbname;" , $username , $password , array( PDO::ATTR_PERSISTENT => true, ) ); } catch (Exception $ex) { $tools = new tools(); $path = $tools->log("数据库初始化失败，已强制断开链接。<br/>抓取到的异常栈如下：<br/><pre>" . print_r($ex, true) . "</pre>", 'db');
header("Content-type:text/html;charset=utf-8"); if ($config["SYSTEM"]["DEBUG"]) { echo "数据库初始化失败，已强制断开链接。<br/>详细信息请访问{$path}文件日志"; } else { echo "数据库初始化失败，请联系系统管理员。"; } die(); } try { self::$PDOInstance->query("SET client_encoding='UTF-8';"); self::$PDOInstance->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); self::$PDOInstance->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); } catch (Exception $exc) { $this->pdo=NULL; $doc = <<<DOC <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <script src="layer/jquery-1.11.1.min.js"></script> <script src="layer/layer.js"></script> <head> <body> DOC; print $doc; $info=L('服务器变更请刷新'); print("<script>layer.msg('".$info."', {icon: 2,time: 30000},function(){location.reload();});</script>"); print('</body></html>'); self::$PDOInstance=NULL; exit(); } }
$this->pdo = self::$PDOInstance; $this->getconnect_server(); } |
//每个模块需要做数据库操作时，model层会去执行下父类(db.class.php)的构造方法 然后进行数据库操作
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public function __construct($data) { parent::__construct(); } |
[root@asg omp]# ps -aux | grep post | grep omp
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ
postgres 31717 0.1 0.2 199876 8864 ? Ss 16:25 0:00 postgres: ompuser OMPDB asg.localdomain(43255) idle
postgres 31725 0.2 0.2 200032 9964 ? Ss 16:25 0:00 postgres: ompuser OMPDB asg.localdomain(43256) idle
postgres 31787 0.0 0.1 199568 5496 ? Ss 16:25 0:00 postgres: ompuser OMPDB [local] idle
[root@asg omp]# ps -aux | grep post | grep omp
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ
postgres 31717 0.0 0.2 199876 8864 ? Ss 16:25 0:00 postgres: ompuser OMPDB asg.localdomain(43255) idle
postgres 31725 0.1 0.2 200032 9964 ? Ss 16:25 0:00 postgres: ompuser OMPDB asg.localdomain(43256) idle
postgres 31787 0.0 0.1 199568 5496 ? Ss 16:25 0:00 postgres: ompuser OMPDB [local] idle
postgres 32234 0.2 0.2 199924 8352 ? Ss 16:25 0:00 postgres: ompuser OMPDB asg.localdomain(43257) idle
postgres 32254 0.1 0.1 199724 7516 ? Ss 16:25 0:00 postgres: ompuser OMPDB asg.localdomain(43258) idle
[root@asg omp]# ps -aux | grep post | grep omp
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ
postgres 2954 0.0 0.1 199660 6752 ? Ss 16:30 0:00 postgres: ompuser OMPDB asg.localdomain(43261) idle
postgres 2956 0.0 0.1 199724 7496 ? Ss 16:30 0:00 postgres: ompuser OMPDB asg.localdomain(43262) idle
postgres 2966 0.2 0.2 200216 8632 ? Ss 16:30 0:00 postgres: ompuser OMPDB asg.localdomain(43263) idle
postgres 2967 0.0 0.1 199660 6748 ? Ss 16:30 0:00 postgres: ompuser OMPDB asg.localdomain(43264) idle
postgres 2968 0.0 0.1 199660 6760 ? Ss 16:30 0:00 postgres: ompuser OMPDB asg.localdomain(43265) idle
postgres 31717 0.0 0.2 200068 9144 ? Ss 16:25 0:00 postgres: ompuser OMPDB asg.localdomain(43255) idle
postgres 31787 0.0 0.1 199568 5496 ? Ss 16:25 0:00 postgres: ompuser OMPDB [local] idle
postgres 32234 0.0 0.2 199924 8352 ? Ss 16:25 0:00 postgres: ompuser OMPDB asg.localdomain(43257) idle
postgres 32254 0.0 0.1 199724 7516 ? Ss 16:25 0:00 postgres: ompuser OMPDB asg.localdomain
