Node.JS Cluster vs JXCore Multithreaded vs HHVM

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Node cluster:
Node version: v0.10.25

Code:
var http = require('http');
var mysql = require('mysql2');
var async = require('async');
var connection = mysql.createConnection({ user: 'benchmark', database: 'benchmark', password: 'benchpass'});
var cluster = require('cluster');
var numCPUs = require('os').cpus().length;

if (cluster.isMaster) {
    // Fork workers.
    for (var i = 0; i < numCPUs; i++) {
        cluster.fork();
    }

    cluster.on('exit', function (worker, code, signal) {
        console.log('worker ' + worker.process.pid + ' died');
    });
} else {
    http.createServer(function (req, res) {
        res.writeHead(200, {'Content-Type': 'text/html'});
        connection.query('SELECT * FROM users;', function (err, rows) {
            if (err) {
                throw new SQLException('Connection failed: ' + err);
            }
            var table = '<table><tr><th>id</th><th>username</th><th>password</th><th>banking account</th><th>phone number</th></tr>';
            async.forEach(rows, function (row, callback) {
                table += '<tr><td>' + row.id + '</td><td>' + row.username + '</td><td>' + row.password + '</td><td>' + row.banking_account + '</td><td>' + row.phone_number + '</td></tr>';
                callback();
            }, function (err) {
                if (err) {
                    throw new Error('Async failed! ' + err);
                }
                table += '</table>';
                table += '<div style="color:red">Hello from cluster worker: ' + cluster.worker.id + '</div>';
                res.end(table);
            });
        });
    }).listen(9615);
    console.log("Server running at http://localhost:9615 on cluster worker number " + cluster.worker.id);
}

Run command:
/srv/node/benchmark-node-cluster$ NODE_DEBUG=cluster node index.js
20280,Master Worker 20286 online
20280,Master Worker 20287 online
20280,Master Worker 20289 online
20280,Master Worker 20290 online
Server running at http://localhost:9615 on cluster worker number 1
Server running at http://localhost:9615 on cluster worker number 2
Server running at http://localhost:9615 on cluster worker number 3
Server running at http://localhost:9615 on cluster worker number 4

Benchmark:
ab -n 100000 -c 200 http://127.0.0.1:9615/
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>
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 10000 requests
Completed 20000 requests
Completed 30000 requests
Completed 40000 requests
Completed 50000 requests
Completed 60000 requests
Completed 70000 requests
Completed 80000 requests
Completed 90000 requests
Completed 100000 requests
Finished 100000 requests


Server Software:
Server Hostname:        127.0.0.1
Server Port:            9615

Document Path:          /
Document Length:        11001 bytes

Concurrency Level:      200
Time taken for tests:   11.692 seconds
Complete requests:      100000
Failed requests:        0
Total transferred:      1110100000 bytes
HTML transferred:       1100100000 bytes
Requests per second:    8553.03 [#/sec] (mean)
Time per request:       23.384 [ms] (mean)
Time per request:       0.117 [ms] (mean, across all concurrent requests)
Transfer rate:          92721.84 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       3
Processing:     0   23  16.8     20     113
Waiting:        0   23  16.8     20     113
Total:          0   23  16.8     20     113

Percentage of the requests served within a certain time (ms)
  50%     20
  66%     28
  75%     34
  80%     37
  90%     45
  95%     52
  98%     63
  99%     80
 100%    113 (longest request)


##########################################################################
JXCore multithreaded
JXCore version: JXcore Beta 2.3.2

Code:
var http = require('http');
var mysql = require('mysql2');
var async = require('async');
var connection = mysql.createConnection({ user: 'benchmark', database: 'benchmark', password: 'benchpass'});

http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/html'});
    connection.query('SELECT * FROM users;', function (err, rows) {
        if (err) {
            throw new SQLException('Connection failed: ' + err);
        }
        var table = '<table><tr><th>id</th><th>username</th><th>password</th><th>banking account</th><th>phone number</th></tr>';
        async.forEach(rows, function (row, callback) {
            table += '<tr><td>' + row.id + '</td><td>' + row.username + '</td><td>' + row.password + '</td><td>' + row.banking_account + '</td><td>' + row.phone_number + '</td></tr>';
            callback();
        }, function (err) {
            if (err) {
                throw new Error('Async failed! ' + err);
            }
            table += '</table>';
            table += '<div style="color:red">Hello from jxcore thread: ' + process.threadId + '</div>';
            res.end(table);
        });
    });
}).listen(9615);
console.log("Server running at http://localhost:9615 on thread number " + process.threadId);

Run command:
/srv/node/benchmark-jxcore$ jx mt-keep:4 index.js
Server running at http://localhost:9615 on thread number 0
Server running at http://localhost:9615 on thread number 1
Server running at http://localhost:9615 on thread number 2
Server running at http://localhost:9615 on thread number 3

Benchmark:
ab -n 100000 -c 200 http://127.0.0.1:9615/
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>
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 10000 requests
Completed 20000 requests
Completed 30000 requests
Completed 40000 requests
Completed 50000 requests
Completed 60000 requests
Completed 70000 requests
Completed 80000 requests
Completed 90000 requests
Completed 100000 requests
Finished 100000 requests


Server Software:
Server Hostname:        127.0.0.1
Server Port:            9615

Document Path:          /
Document Length:        11000 bytes

Concurrency Level:      200
Time taken for tests:   14.994 seconds
Complete requests:      100000
Failed requests:        0
Total transferred:      1110000000 bytes
HTML transferred:       1100000000 bytes
Requests per second:    6669.12 [#/sec] (mean)
Time per request:       29.989 [ms] (mean)
Time per request:       0.150 [ms] (mean, across all concurrent requests)
Transfer rate:          72292.19 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0  20.5      0     999
Processing:     0   30  22.8     25     234
Waiting:        0   29  22.8     25     234
Total:          0   30  30.7     25    1037

Percentage of the requests served within a certain time (ms)
  50%     25
  66%     35
  75%     41
  80%     46
  90%     60
  95%     71
  98%     90
  99%    101
 100%   1037 (longest request)

###########################################################################
JXCore running Cluster code with no MT

ab -n 100000 -c 200 http://127.0.0.1:9615/
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>
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 10000 requests
Completed 20000 requests
Completed 30000 requests
Completed 40000 requests
Completed 50000 requests
Completed 60000 requests
Completed 70000 requests
Completed 80000 requests
Completed 90000 requests
Completed 100000 requests
Finished 100000 requests


Server Software:
Server Hostname:        127.0.0.1
Server Port:            9615

Document Path:          /
Document Length:        11001 bytes

Concurrency Level:      200
Time taken for tests:   14.254 seconds
Complete requests:      100000
Failed requests:        0
Total transferred:      1110100000 bytes
HTML transferred:       1100100000 bytes
Requests per second:    7015.81 [#/sec] (mean)
Time per request:       28.507 [ms] (mean)
Time per request:       0.143 [ms] (mean, across all concurrent requests)
Transfer rate:          76057.18 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0  18.1      0     997
Processing:     0   28  24.5     22     171
Waiting:        0   28  24.5     22     171
Total:          0   28  30.6     22    1044

Percentage of the requests served within a certain time (ms)
  50%     22
  66%     35
  75%     42
  80%     47
  90%     59
  95%     72
  98%     91
  99%    104
 100%   1044 (longest request)


###########################################################################
HHVM fastCGI + Nginx
HHVM version:
HipHop VM 3.2.0 (rel)
Compiler: tags/HHVM-3.2.0-0-g01228273b8cf709aacbd3df1c51b1e690ecebac8
Repo schema: c52ba40f4a246d35a88f1dfc1daf959851ced8aa

Code:
<?php

$db = new PDO('mysql:host=localhost;dbname=benchmark', 'benchmark', 'benchpass');
$results = $db->query('SELECT * FROM users;');

echo '<table><tr><th>id</th><th>username</th><th>password</th><th>banking account</th><th>phone number</th></tr>';
foreach ($results as $row) {
    echo '<tr><td>' . $row['id'] . '</td><td>' . $row['username'] . '</td><td>' . $row['password'] . '</td><td>' . $row['banking_account'] . '</td><td>' . $row['phone_number'] . '</td></tr>';
}
echo '</table>';
echo '<div style="color:red">Hello from HHVM!</div>';



Benchmark:
ab -n 100000 -c 200 http://127.0.0.1:8080/
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>
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 10000 requests
Completed 20000 requests
Completed 30000 requests
Completed 40000 requests
Completed 50000 requests
Completed 60000 requests
Completed 70000 requests
Completed 80000 requests
Completed 90000 requests
Completed 100000 requests
Finished 100000 requests


Server Software:        nginx/1.6.1
Server Hostname:        127.0.0.1
Server Port:            8080

Document Path:          /
Document Length:        10989 bytes

Concurrency Level:      200
Time taken for tests:   16.247 seconds
Complete requests:      100000
Failed requests:        0
Total transferred:      1115100000 bytes
HTML transferred:       1098900000 bytes
Requests per second:    6155.01 [#/sec] (mean)
Time per request:       32.494 [ms] (mean)
Time per request:       0.162 [ms] (mean, across all concurrent requests)
Transfer rate:          67025.92 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    5  70.4      0    1000
Processing:     2   27   8.0     26     237
Waiting:        2   27   8.0     26     237
Total:          4   32  70.8     26    1036

Percentage of the requests served within a certain time (ms)
  50%     26
  66%     31
  75%     33
  80%     33
  90%     35
  95%     39
  98%     43
  99%     48
 100%   1036 (longest request)