I did the benchmarks outlined at the end of the article.

Summary of results:

1. Node.js v0.10.15, single worker: 46.2 seconds

2. Node.js v0.10.15, cluster 8 workers using naught: 17.2 seconds

3. Go 1.0.2, GOMAXPROCS left default: 3.5 seconds

4. Go 1.0.2, GOMAXPROCS=8: 3.7 seconds

Detailed results below:

1. Node.js v0.10.15, single worker

Concurrency Level: 100
Time taken for tests: 46.217 seconds
Complete requests: 10000
Failed requests: 0
Write errors: 0
Total transferred: 10486510000 bytes
HTML transferred: 10485760000 bytes
Requests per second: 216.37 [#/sec] (mean)
Time per request: 462.168 [ms] (mean)
Time per request: 4.622 [ms] (mean, across all concurrent requests)
Transfer rate: 221580.08 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.2 0 3
Processing: 193 461 36.2 450 944
Waiting: 16 235 127.3 235 534
Total: 193 461 36.2 450 944

Percentage of the requests served within a certain time (ms)
50% 450
66% 467
75% 470
80% 486
90% 492
95% 514
98% 517
99% 545
100% 944 (longest request)

2. Node.js v0.10.15, cluster 8 workers using naught

Concurrency Level: 100
Time taken for tests: 17.199 seconds
Complete requests: 10000
Failed requests: 0
Write errors: 0
Total transferred: 10486510000 bytes
HTML transferred: 10485760000 bytes
Requests per second: 581.41 [#/sec] (mean)
Time per request: 171.995 [ms] (mean)
Time per request: 1.720 [ms] (mean, across all concurrent requests)
Transfer rate: 595408.80 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.2 0 3
Processing: 7 171 116.4 149 739
Waiting: 5 96 81.9 71 710
Total: 8 171 116.5 150 740

Percentage of the requests served within a certain time (ms)
50% 150
66% 197
75% 236
80% 266
90% 324
95% 397
98% 438
99% 493
100% 740 (longest request)

3. Go 1.0.2, GOMAXPROCS left default

Concurrency Level: 100
Time taken for tests: 3.542 seconds
Complete requests: 10000
Failed requests: 0
Write errors: 0
Total transferred: 10486730000 bytes
HTML transferred: 10485760000 bytes
Requests per second: 2823.16 [#/sec] (mean)
Time per request: 35.421 [ms] (mean)
Time per request: 0.354 [ms] (mean, across all concurrent requests)
Transfer rate: 2891181.71 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 1 0.3 1 3
Processing: 9 35 2.2 34 56
Waiting: 0 1 1.3 1 22
Total: 12 35 2.3 35 57

Percentage of the requests served within a certain time (ms)
50% 35
66% 36
75% 36
80% 36
90% 37
95% 38
98% 39
99% 41
100% 57 (longest request)

4. Go 1.0.2, GOMAXPROCS=8

Concurrency Level: 100
Time taken for tests: 3.657 seconds
Complete requests: 10000
Failed requests: 0
Write errors: 0
Total transferred: 10486730000 bytes
HTML transferred: 10485760000 bytes
Requests per second: 2734.54 [#/sec] (mean)
Time per request: 36.569 [ms] (mean)
Time per request: 0.366 [ms] (mean, across all concurrent requests)
Transfer rate: 2800429.67 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 1 0.4 1 3
Processing: 19 36 2.5 35 57
Waiting: 0 1 1.1 1 16
Total: 20 37 2.5 36 58

Percentage of the requests served within a certain time (ms)
50% 36
66% 37
75% 37
80% 37
90% 38
95% 39
98% 42
99% 51
100% 58 (longest request)