alien@ubuntu:~$ ab -n 10000 -c 10 http://localhost/cache/php1.php
This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Finished 10000 requests


Server Software:        Apache/2.2.4
Server Hostname:        localhost
Server Port:            80

Document Path:          /cache/php1.php
Document Length:        968 bytes

Concurrency Level:      10
Time taken for tests:   27.228792 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Total transferred:      11770000 bytes
HTML transferred:       9680000 bytes
Requests per second:    367.26 [#/sec] (mean)
Time per request:       27.229 [ms] (mean)
Time per request:       2.723 [ms] (mean, across all concurrent requests)
Transfer rate:          422.13 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.9      0      19
Processing:     3   26 110.9     19    5430
Waiting:        0   24 105.5     18    5430
Total:          3   26 110.9     19    5430

Percentage of the requests served within a certain time (ms)
  50%     19
  66%     23
  75%     26
  80%     29
  90%     38
  95%     49
  98%     70
  99%     97
 100%   5430 (longest request)
alien@ubuntu:~$ ab -n 10000 -c 10 http://localhost/cache/php2.php
This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Finished 10000 requests


Server Software:        Apache/2.2.4
Server Hostname:        localhost
Server Port:            80

Document Path:          /cache/php2.php
Document Length:        966 bytes

Concurrency Level:      10
Time taken for tests:   14.442991 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Total transferred:      11750000 bytes
HTML transferred:       9660000 bytes
Requests per second:    692.38 [#/sec] (mean)
Time per request:       14.443 [ms] (mean)
Time per request:       1.444 [ms] (mean, across all concurrent requests)
Transfer rate:          794.43 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    2   3.2      2      47
Processing:     1   10  47.4      8    2960
Waiting:        0    8  45.2      5    2960
Total:          1   13  47.4     11    2960

Percentage of the requests served within a certain time (ms)
  50%     11
  66%     13
  75%     14
  80%     15
  90%     19
  95%     22
  98%     32
  99%     55
 100%   2960 (longest request)