Python套接字间歇性拒绝连接

我有一个python套接字接受连接（频繁连接/断开连接，每秒多个连接）

代码：

一旦服务器最初启动，响应速度非常快，但过了一会儿，当服务器应该接受新连接时，我开始获得连接超时

例如：

root@bugsbunny:/srv# telnet localhost 9999
Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
Welcome
Connection closed by foreign host.
root@bugsbunny:/srv# telnet localhost 9999
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection timed out

我已经检查了我能想到的明显的事情，看起来这不是一个服务器问题

限制：

root@bugsbunny:/srv# cat /proc/28038/limits 
Limit                     Soft Limit           Hard Limit           Units     
Max cpu time              unlimited            unlimited            seconds   
Max file size             unlimited            unlimited            bytes     
Max data size             unlimited            unlimited            bytes     
Max stack size            8388608              unlimited            bytes     
Max core file size        0                    unlimited            bytes     
Max resident set          unlimited            unlimited            bytes     
Max processes             514903               514903               processes 
Max open files            65535                65535                files     
Max locked memory         65536                65536                bytes     
Max address space         unlimited            unlimited            bytes     
Max file locks            unlimited            unlimited            locks     
Max pending signals       514903               514903               signals   
Max msgqueue size         819200               819200               bytes     
Max nice priority         0                    0                    
Max realtime priority     0                    0                    
Max realtime timeout      unlimited            unlimited            us        

Used FDs:
root@bugsgunny:/srv# ls /proc/28038/fd | wc -l
845

有人知道这里发生了什么吗

Thnx

root@bugsbunny:/srv# cat /proc/28038/limits 
Limit                     Soft Limit           Hard Limit           Units     
Max cpu time              unlimited            unlimited            seconds   
Max file size             unlimited            unlimited            bytes     
Max data size             unlimited            unlimited            bytes     
Max stack size            8388608              unlimited            bytes     
Max core file size        0                    unlimited            bytes     
Max resident set          unlimited            unlimited            bytes     
Max processes             514903               514903               processes 
Max open files            65535                65535                files     
Max locked memory         65536                65536                bytes     
Max address space         unlimited            unlimited            bytes     
Max file locks            unlimited            unlimited            locks     
Max pending signals       514903               514903               signals   
Max msgqueue size         819200               819200               bytes     
Max nice priority         0                    0                    
Max realtime priority     0                    0                    
Max realtime timeout      unlimited            unlimited            us        

Used FDs:
root@bugsgunny:/srv# ls /proc/28038/fd | wc -l
845