<p>I need to know about Epoll On linux System.</p>

<p>Could you recommend manual or guides about epoll library?</p>

<p>need more detailed guides. it's better to have some examples.</p>

<p>help me. and Thank you for reading.</p>

Here's an introduction to Epoll, a pretty basic tutorial:
http://blog.kovyrin.net/2006/04/13/epoll-asynchronous-network-programming/
A more complete example can be found here:
https://banu.com/blog/2/how-to-use-epoll-a-complete-example-in-c/
Also,
the man pages