クライアントから実行して間にルータはさんで、バーチャルホスト使ったら･･･

Server Software: Apache/2.0.52

Document Path: /index.html.en
Document Length: 1456 bytes

Concurrency Level: 10
Time taken for tests: 63.861828 seconds
Complete requests: 10000
Failed requests: 0
Write errors: 0
Total transferred: 17720000 bytes
HTML transferred: 14560000 bytes
Requests per second: 156.59 [#/sec] (mean)
Time per request: 63.862 [ms] (mean)
Time per request: 6.386 [ms] (mean, across all concurrent requests)
Transfer rate: 270.96 [Kbytes/sec] received

サーバ上で直接実行したら･･･

Server Software: Apache/2.0.52

Document Path: /index.html.en
Document Length: 1027 bytes

Concurrency Level: 10
Time taken for tests: 19.296285 seconds
Complete requests: 10000
Failed requests: 0
Write errors: 0
Non-2xx responses: 10004
Total transferred: 13335332 bytes
HTML transferred: 10274108 bytes
Requests per second: 518.23 [#/sec] (mean)
Time per request: 19.296 [ms] (mean)
Time per request: 1.930 [ms] (mean, across all concurrent requests)
Transfer rate: 674.84 [Kbytes/sec] received