epoll

https://oxnz.github.io/2014/04/26/linux-epoll/

http://luminous.blog.51cto.com/10797288/1832114

http://blog.sae.sina.com.cn/archives/3708

https://segmentfault.com/a/1190000003063859

https://www.kernel.org/doc/ols/2004/ols2004v1-pages-215-226.pdf

http://blog.csdn.net/tianmohust/article/details/6677985

http://luminous.blog.51cto.com/10797288/1832114

http://www.jianshu.com/p/dfd940e7fca2

http://www.cnblogs.com/apprentice89/archive/2013/05/09/3070051.html

http://www.linuxidc.com/Linux/2012-05/59873p3.htm

http://xingyunbaijunwei.blog.163.com/blog/static/76538067201241685556302/

http://blog.csdn.net/kkxgx/article/details/7717125

https://banu.com/blog/2/how-to-use-epoll-a-complete-example-in-c/epoll-example.c

http://blog.csdn.net/lizhiguo0532/article/details/6568964#comments

http://blog.csdn.net/lizhiguo0532/article/details/6568968

http://blog.csdn.net/lizhiguo0532/article/details/6568969

http://www.ibm.com/developerworks/cn/linux/l-cn-edntwk/index.html?ca=drs-

http://linux.chinaunix.net/techdoc/net/2009/05/03/1109887.shtml

• 第一篇介绍Linux Select
• 第二篇介绍 poll

http://man7.org/linux/man-pages/man2/epoll_wait.2.html

http://www.python4science.eu/multiplex_io.html

https://www.ulduzsoft.com/2014/01/select-poll-epoll-practical-difference-for-system-architects/