ELB で SSL 復号するときしないときのベンチマーク

叩く側のインスタンスA
    ↓
AWS ELB
    ↓
叩かれる側のインスタンスB

sudo yum install httpd-tools

sudo yum install npm --enablerepo=epel
npm install express

cat <<EOT >index.js
var app = require('express')();
app.get('/*', function(req, res) {
  if (req.query.wait) {
    setTimeout(function() {
      res.write('OK');
      res.end();
    }, req.query.wait);
  } else {
    res.write('OK');
    res.end();
  }
  console.log('%s %s %s', new Date(), req.method, req.url);
});
app.listen(10080);
EOT

node index.js

$ ab -n 5000 -c 200  http://yourloadbalancer/?wait=200
（中略）
Document Path:          /?wait=200
Document Length:        2 bytes

Concurrency Level:      200
Time taken for tests:   7.462 seconds
Complete requests:      5000
Failed requests:        0
Write errors:           0
Total transferred:      505286 bytes
HTML transferred:       10032 bytes
Requests per second:    670.07 [#/sec] (mean)
Time per request:       298.476 [ms] (mean)
Time per request:       1.492 [ms] (mean, across all concurrent requests)
Transfer rate:          66.13 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        1    2   2.4      1      22
Processing:   219  290  53.8    276     620
Waiting:      202  249  60.4    233     620
Total:        220  292  54.9    278     628
（後略）

$ ab -n 5000 -c 200  https://yourloadbalancer/?wait=200
（中略）
Server Port:            443
SSL/TLS Protocol:       TLSv1,RC4-SHA,2048,128

Document Path:          /?wait=200
Document Length:        2 bytes

Concurrency Level:      200
Time taken for tests:   104.943 seconds
Complete requests:      5000
Failed requests:        0
Write errors:           0
Total transferred:      594967 bytes
HTML transferred:       10002 bytes
Requests per second:    47.64 [#/sec] (mean)
Time per request:       4197.717 [ms] (mean)
Time per request:       20.989 [ms] (mean, across all concurrent requests)
Transfer rate:          5.54 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:       96 2015 597.0   1993    4804
Processing:   504 2135 532.8   2112    4500
Waiting:      472 2122 534.9   2099    4500
Total:       1936 4150 516.0   4058    6810
（後略）