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QPS才十几打开文件数确是1000

### 问题描述
SWOOLE HttpServer通过请求日志查看QPS才十几，看错误日志发现超过了设置的最大连接数1000，通过命令lsof -i :9505 | wc -l查看打开的文件居然有1000多，什么原因导致打开了大量文件呢？

### Swoole版本，PHP版本，以及操作系统版本信息
swoole4.6 php7.2 centos7.2（8核8G）

### 相关代码
```php
$dbPool = new PDOPool((new PDOConfig)
            ->withHost('localhost')
            ->withPort(3306)
            // ->withUnixSocket('/tmp/mysql.sock')
            ->withDbName('aaa')
            ->withCharset('utf8')
            ->withUsername('root')
            ->withPassword('root')
        );
        $http = new \Swoole\Http\Server("0.0.0.0", 9505);
        $http->set(['enable_coroutine' => true, 'worker_num' => 16, 'reactor_num' => 16, 'max_connection' => 1000, 'dispatch_mode' => 3, 'daemonize' => 1, 'log_file' => '/data/aaa/log/error/api.txt', 'log_level' => SWOOLE_LOG_INFO, 'backlog' => 128]);
        $http->on('request', function ($request, $response) use ($dbPool) {
            $db = $dbPool->get();
            $ip = $request->server['remote_addr'];
            if ($ip == '127.0.0.1') {
                $ip = $request->header['x-real-ip'];
            }
            $request_uri = str_replace('/index.php?s=/', '', $request->server['request_uri']);
            $str = date('Y-m-d H:i:s', time()) . '       ' . $ip . "     " . $request_uri;
            $params = "";
            $request_uri = substr($request_uri, 0, strpos($request_uri, '.html'));
            $action = str_replace('index.php/', '', $request_uri);
            $action = str_replace('/index/', '', $action);
            $action = str_replace('/', '', $action);
            if (!$request->get && !$request->post) {
                $dbPool->put($db);
                $response->end('ok');
            } else {
                switch ($action) {
                    case 'get_wangba_config' :
                        $msg = $this->getWangbaSet($request->get, $db, $ip);
                        break;
                    case 'push_client' :
                        $msg = $this->push_client($request->post, $db, $ip);
                        break;
                    case 'push_log' :
                        $msg = $this->push_log($request->post, $db, $ip);
                        break;
                    default :
                        $msg = 'ok';
                }
                $dbPool->put($db);
                $response->end($msg);
            }
        });
        $http->start();
```

### 你期待的结果是什么？实际看到的错误信息又是什么？
业务代理里面有对mysql的读写操作，就想知道为什么QPS才十几个为什么打开的文件那么多？

发布于3年前 · 30 次浏览 · 来自提问