gnet_server.go: a simple demo server using gnet asyncwrite
myepoll.go: a demo server using epoll
myclient.go: a client to receive message from server
data block len: 933888
Myepoll: runtime: 15s, total block: 21567, more stable
gnet: runtime: 15s, total block: 26236, variance is larger, sometimes up to 40000+, sometime 15000