[erlang-questions] why my test case of socket are always slower much than c++

[Peter]

i test for the socket rec/sed speed,

 i used  c++、Erlang and golang,  and the result like this:




so, i want know,  why always  slow  when erlang as a rec-server.  is use 
wrong?

my source code see attachment,  and my test case like this:

the erlang server:
erl +K true 
server:start(8080, 200)

the erlang client:
erl +K true
client:start(192.168.0.1, 8080, 200, 1000*10000)

the cpp server:
./server 192.168.0.1 8080 200

the cpp client:
./client 192.168.0.1 8080  10000000 200





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