Simplistic HTTP performance test: Netty 3 vs 4 (master) /// Became a tad bit slower with less variation. Maybe due to validations required for more strict thread model and reduced garbage production. 4 at port 8080 and 3 at port 8088.

gistfile1.txt

$ wrk -c 1024 -d 120m -t 1 --latency http://localhost:8080/
Running 120m test @ http://localhost:8080/
  1 threads and 1024 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     5.80ms    2.68ms  65.36ms   80.40%
    Req/Sec   101.95k   221.90   107.00k    95.17%
  Latency Distribution
     50%    4.81ms
     75%    5.45ms
     90%    9.84ms
     99%   14.74ms
  735002574 requests in 120.00m, 233.42GB read
  Socket errors: connect 0, read 0, write 0, timeout 15
Requests/sec: 102083.65
Transfer/sec:     33.20MB

$ wrk -c 1024 -d 120m -t 1 --latency http://localhost:8088/
Running 120m test @ http://localhost:8088/
  1 threads and 1024 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     5.39ms    2.11ms  35.11ms   86.51%
    Req/Sec   103.06k   455.20   119.00k    96.24%
  Latency Distribution
     50%    4.80ms
     75%    5.26ms
     90%    9.04ms
     99%   13.10ms
  747665541 requests in 120.00m, 226.30GB read
  Socket errors: connect 0, read 44, write 0, timeout 451
Requests/sec: 103842.37
Transfer/sec:     32.19MB