node

haproxy

 ∞ ~ ab -n 1000 -c 100 http://127.0.0.1:10000/
This is ApacheBench, Version 2.3 <$Revision: 1139530 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests


Server Software:        
Server Hostname:        127.0.0.1
Server Port:            10000

Document Path:          /
Document Length:        11 bytes

Concurrency Level:      100
Time taken for tests:   0.207 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      75000 bytes
HTML transferred:       11000 bytes
Requests per second:    4831.97 [#/sec] (mean)
Time per request:       20.695 [ms] (mean)
Time per request:       0.207 [ms] (mean, across all concurrent requests)
Transfer rate:          353.90 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    2   1.4      1       8
Processing:     2   18   9.3     18      37
Waiting:        2   17   9.1     17      36
Total:          3   20   8.9     20      37

Percentage of the requests served within a certain time (ms)
  50%     20
  66%     24
  75%     27
  80%     29
  90%     33
  95%     35
  98%     36
  99%     36
 100%     37 (longest request)

haproxy.cfg

global
nbproc 1

listen http_proxy 127.0.0.1:10000
server server1 127.0.0.1:8000 weight 1

http-proxy

 ∞ ~ ab -n 1000 -c 100 http://127.0.0.1:9000/
This is ApacheBench, Version 2.3 <$Revision: 1139530 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests


Server Software:        
Server Hostname:        127.0.0.1
Server Port:            9000

Document Path:          /
Document Length:        21 bytes

Concurrency Level:      100
Time taken for tests:   0.568 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      113000 bytes
HTML transferred:       21000 bytes
Requests per second:    1759.60 [#/sec] (mean)
Time per request:       56.831 [ms] (mean)
Time per request:       0.568 [ms] (mean, across all concurrent requests)
Transfer rate:          194.17 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.6      0       4
Processing:    25   55  14.1     55     102
Waiting:       25   55  14.1     55     102
Total:         25   55  14.0     55     102

Percentage of the requests served within a certain time (ms)
  50%     55
  66%     59
  75%     63
  80%     67
  90%     74
  95%     81
  98%     84
  99%     91
 100%    102 (longest request)

http-proxy.js

var http = require('http')
  , httpProxy = require('http-proxy')
  , server = httpProxy.createServer(8000, 'localhost')

server.listen(9000, function () {
  var addr = server.address();
  console.error('Node proxy server listening on ' + addr.address + ':' + addr.port);
});

node

 ∞ ~ ab -n 1000 -c 100 http://127.0.0.1:8000/
This is ApacheBench, Version 2.3 <$Revision: 1139530 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests


Server Software:        
Server Hostname:        127.0.0.1
Server Port:            8000

Document Path:          /
Document Length:        11 bytes

Concurrency Level:      100
Time taken for tests:   0.156 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      75000 bytes
HTML transferred:       11000 bytes
Requests per second:    6423.43 [#/sec] (mean)
Time per request:       15.568 [ms] (mean)
Time per request:       0.156 [ms] (mean, across all concurrent requests)
Transfer rate:          470.47 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.8      0       4
Processing:     1   14   7.4     13      31
Waiting:        1   14   7.4     13      31
Total:          3   15   7.1     14      31

Percentage of the requests served within a certain time (ms)
  50%     14
  66%     18
  75%     21
  80%     22
  90%     25
  95%     27
  98%     29
  99%     30
 100%     31 (longest request)

node.js

var http = require('http')
  , server = http.createServer(request)

function request (req, res) {
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  res.end('Hello world');
}

server.listen(8000, function () {
  var addr = server.address();
  console.error('Node server listening on ' + addr.address + ':' + addr.port);
});