D(vibe.d) vs Go For Simple HTTP Server

ab_D.log

#Using DMD
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
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 5000 requests
Completed 10000 requests
Completed 15000 requests
Completed 20000 requests
Completed 25000 requests
Completed 30000 requests
Completed 35000 requests
Completed 40000 requests
Completed 45000 requests
Completed 50000 requests
Finished 50000 requests


Server Software:        vibe.d/0.7.18
Server Hostname:        127.0.0.1
Server Port:            8080

Document Path:          /
Document Length:        13 bytes

Concurrency Level:      1000
Time taken for tests:   4.382 seconds
Complete requests:      50000
Failed requests:        0
Write errors:           0
Total transferred:      7650000 bytes
HTML transferred:       650000 bytes
Requests per second:    11410.20 [#/sec] (mean)
Time per request:       87.641 [ms] (mean)
Time per request:       0.088 [ms] (mean, across all concurrent requests)
Transfer rate:          1704.84 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0   18 129.7      0    1001
Processing:     4   31 248.8      8    3311
Waiting:        2   31 248.8      8    3311
Total:          7   49 348.8      8    4309

Percentage of the requests served within a certain time (ms)
  50%      8
  66%      8
  75%      8
  80%      9
  90%     10
  95%     11
  98%     56
  99%   1228
 100%   4309 (longest request)

ab_Go.log

$export GOMAXPROCS=1
$go version
go version go1.0.3

$ab -c 1000 -n 50000 http://127.0.0.1:8081/                       
Finished 50000 requests


Server Software:        
Server Hostname:        127.0.0.1
Server Port:            8081

Document Path:          /
Document Length:        13 bytes

Concurrency Level:      1000
Time taken for tests:   5.653 seconds
Complete requests:      50000
Failed requests:        0
Write errors:           0
Total transferred:      6500000 bytes
HTML transferred:       650000 bytes
Requests per second:    8845.32 [#/sec] (mean)
Time per request:       113.054 [ms] (mean)
Time per request:       0.113 [ms] (mean, across all concurrent requests)
Transfer rate:          1122.94 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        1   31 141.5     11    1017
Processing:     5   16  36.6     15    5607
Waiting:        3   12  36.6     10    5607
Total:         12   47 148.8     26    5613

Percentage of the requests served within a certain time (ms)
  50%     26
  66%     31
  75%     34
  80%     35
  90%     38
  95%     41
  98%   1019
  99%   1033
 100%   5613 (longest request)



$ ~/tools/go/bin/go version                                           
go version go1.2 linux/amd64

ab -c 1000 -n 50000 http://127.0.0.1:8081/
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
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 5000 requests
Completed 10000 requests
Completed 15000 requests
Completed 20000 requests
Completed 25000 requests
Completed 30000 requests
Completed 35000 requests
Completed 40000 requests
Completed 45000 requests
Completed 50000 requests
Finished 50000 requests


Server Software:        
Server Hostname:        127.0.0.1
Server Port:            8081

Document Path:          /
Document Length:        13 bytes

Concurrency Level:      1000
Time taken for tests:   2.604 seconds
Complete requests:      50000
Failed requests:        0
Write errors:           0
Total transferred:      6500000 bytes
HTML transferred:       650000 bytes
Requests per second:    19204.84 [#/sec] (mean)
Time per request:       52.070 [ms] (mean)
Time per request:       0.052 [ms] (mean, across all concurrent requests)
Transfer rate:          2438.11 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        4   25 113.5     12    1017
Processing:     5   17   4.7     17     232
Waiting:        4   13   4.4     12     230
Total:         16   42 113.9     31    1039

Percentage of the requests served within a certain time (ms)
  50%     31
  66%     33
  75%     34
  80%     35
  90%     37
  95%     39
  98%     42
  99%   1029
 100%   1039 (longest request)

app.d

import vibe.d;

shared static this()
{
    auto settings = new HTTPServerSettings;
    settings.port = 8080;
    settings.bindAddresses = ["::1", "127.0.0.1"];
    listenHTTP(settings, &hello);

    logInfo("Please open http://127.0.0.1:8080/ in your browser.");
}

void hello(HTTPServerRequest req, HTTPServerResponse res)
{
    res.writeBody("Hello, World!");
}
    

main.go

package main

import (
    "fmt"
    "net/http"
    "log"
)


func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprint(w, "Hello, world!")
}


func main() {
    http.HandleFunc("/", handler)
    if err := http.ListenAndServe(":8081", nil); err != nil {
        log.Fatal("ListenAndServe: ", err)
    }
}