connect -n 5 app.js

#ab -n 50000 -c 200 http://127.0.0.1:3000/

Server Software:        
Server Hostname:        127.0.0.1
Server Port:            3000

Document Path:          /
Document Length:        574 bytes

Concurrency Level:      200
Time taken for tests:   5.188 seconds
Complete requests:      50000
Failed requests:        0
Write errors:           0
Total transferred:      40941719 bytes
HTML transferred:       28729274 bytes
Requests per second:    9637.56 [#/sec] (mean)
Time per request:       20.752 [ms] (mean)
Time per request:       0.104 [ms] (mean, across all concurrent requests)
Transfer rate:          7706.61 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    6   3.6      6      30
Processing:     0   14   9.3     12     108
Waiting:        0   12   8.9     10     107
Total:          0   21  10.1     19     111