use "wrk" tool to test it for prologue.
This is a `wrk` test of `httpbeast` `hello word`：wrk -c1000 -d10s http://192.12.1.22:8080/       
                           
Running 10s test @ http://192.12.1.22:8080/
  2 threads and 1000 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     8.01ms   12.16ms 215.10ms   99.05%
    Req/Sec    71.46k     5.27k   76.81k    81.31%
  1407514 requests in 10.05s, 154.37MB read
  Non-2xx or 3xx responses: 1407514
Requests/sec: 140036.79
Transfer/sec:     15.36MB

This is a `wrk` test of `prologue` `hello word`.:wrk -c1000 -d10s http://192.12.1.22:8080/        
                          
Running 10s test @ http://192.12.1.22:8080/
  2 threads and 1000 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    34.58ms    0.96ms  39.56ms   78.50%
    Req/Sec    14.51k     1.18k   16.28k    85.35%
  286065 requests in 10.02s, 43.65MB read
Requests/sec:  28538.37
Transfer/sec:      4.35MB

Why is the difference so big？which place cause it so low, suggest to optimize.
