Benchmarks for http://blog.perfectapi.com/2012/benchmarking-apis-using-perfectapi-vs-express.js-vs-restify.js/

expressjs.benchmark 1

Server Software:
Server Hostname:        10.110.49.174
Server Port:            8000

Document Path:          /
Document Length:        12 bytes

Concurrency Level:      250
Time taken for tests:   9.339 seconds
Complete requests:      16000
Failed requests:        0
Write errors:           0
Keep-Alive requests:    16000
Total transferred:      2208000 bytes
HTML transferred:       192000 bytes
Requests per second:    1713.24 [#/sec] (mean)
Time per request:       145.922 [ms] (mean)
Time per request:       0.584 [ms] (mean, across all concurrent requests)
Transfer rate:          230.89 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   1.2      0      13
Processing:     3  144  44.6    145     786
Waiting:        3  144  44.6    145     786
Total:          4  144  44.5    145     786

Percentage of the requests served within a certain time (ms)
  50%    145
  66%    149
  75%    154
  80%    160
  90%    181
  95%    229
  98%    250
  99%    281
 100%    786 (longest request)

perfectapi.benchmark 1

Server Software:
Server Hostname:        10.110.49.174
Server Port:            3004

Document Path:          /sharedmem/get/collection/ab/key/test
Document Length:        4 bytes

Concurrency Level:      250
Time taken for tests:   8.007 seconds
Complete requests:      8000
Failed requests:        0
Write errors:           0
Keep-Alive requests:    8000
Total transferred:      1168000 bytes
HTML transferred:       32000 bytes
Requests per second:    999.10 [#/sec] (mean)
Time per request:       250.226 [ms] (mean)
Time per request:       1.001 [ms] (mean, across all concurrent requests)
Transfer rate:          142.45 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   1.3      0      10
Processing:     4  246  60.2    246     477
Waiting:        3  246  60.2    246     477
Total:          9  246  59.9    246     477

Percentage of the requests served within a certain time (ms)
  50%    246
  66%    265
  75%    276
  80%    281
  90%    319
  95%    374
  98%    410
  99%    419
 100%    477 (longest request)

restify.benchmark 1

Server Software:        myapp
Server Hostname:        10.110.49.174
Server Port:            8000

Document Path:          /echo/mark
Document Length:        15 bytes

Concurrency Level:      250
Time taken for tests:   32.904 seconds
Complete requests:      8000
Failed requests:        0
Write errors:           0
Keep-Alive requests:    0
Total transferred:      4240174 bytes
HTML transferred:       120000 bytes
Requests per second:    243.13 [#/sec] (mean)
Time per request:       1028.237 [ms] (mean)
Time per request:       4.113 [ms] (mean, across all concurrent requests)
Transfer rate:          125.85 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0  408 1238.4      1   21098
Processing:     3  575 297.2    568    1480
Waiting:        3  575 297.2    568    1480
Total:          4  984 1251.6    653   21248

Percentage of the requests served within a certain time (ms)
  50%    653
  66%    844
  75%    933
  80%    992
  90%   3292
  95%   3556
  98%   3784
  99%   4209
 100%  21248 (longest request)