使用php socket io，连接量达到7000的时候，连接会出现等待……

[wangch@im phpsocket]$ sudo php start.php status
Workerman[start.php] status 
----------------------------------------------GLOBAL STATUS----------------------------------------------------
Workerman version:4.0.19          PHP version:7.3.6
start time:2021-09-01 17:39:58   run 0 days 22 hours   
load average: 4.16, 2, 2         event-loop:\Workerman\Events\Event
1 workers       1 processes
worker_name  exit_status      exit_count
PHPSocketIO  65280            84
----------------------------------------------PROCESS STATUS---------------------------------------------------
pid memory  listening              worker_name  connections send_fail timers  total_request qps    status
35046   64M     socketIO://0.0.0.0:443 PHPSocketIO  8152        0         1612    7776          0      [idle]
----------------------------------------------PROCESS STATUS---------------------------------------------------
Summary 64M     -                      -            8152        0         1612    7776          0      [Summary] 
[wangch@im phpsocket]$ 

这是生产环境下的一个socket io 运行状态，我发现，当 connections 达到7000+的时候，服务会卡顿，类似于进队列那种，连接的时候会进行等待。

如何优化？