Scalability of sort script:

#_of_conc.conn.			speedup
1						1
10						9.64
100						63.9

Raw output from Apache's ab tool is attached below.

================== 1 concurrent connections (sort script) ================== 
$ ab -n 100 -c 1 http://http://benchmarkgae.appspot.com/sort

Document Path:          /sort
Document Length:        1294 bytes

Concurrency Level:      1
Time taken for tests:   12.678217 seconds
Complete requests:      100
Failed requests:        97
   (Connect: 0, Length: 97, Exceptions: 0)
Write errors:           0
Non-2xx responses:      97
Total transferred:      116070 bytes
HTML transferred:       100785 bytes
Requests per second:    7.89 [#/sec] (mean)
Time per request:       126.782 [ms] (mean)
Time per request:       126.782 [ms] (mean, across all concurrent requests)
Transfer rate:          8.91 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:       35   35   0.4     35      36
Processing:    61   91  78.9     72     531
Waiting:       60   90  79.0     71     530
Total:         96  126  78.9    107     566

Percentage of the requests served within a certain time (ms)
  50%    107
  66%    124
  75%    125
  80%    126
  90%    130
  95%    154
  98%    566
  99%    566
 100%    566 (longest request)

================== 10 concurrent connections (sort script) ================== 
$ ab -n 1000 -c 10 http://http://benchmarkgae.appspot.com/sort

Document Path:          /sort
Document Length:        1294 bytes

Concurrency Level:      10
Time taken for tests:   13.146034 seconds
Complete requests:      1000
Failed requests:        952
   (Connect: 0, Length: 952, Exceptions: 0)
Write errors:           0
Non-2xx responses:      952
Total transferred:      1165920 bytes
HTML transferred:       1013160 bytes
Requests per second:    76.07 [#/sec] (mean)
Time per request:       131.460 [ms] (mean)
Time per request:       13.146 [ms] (mean, across all concurrent requests)
Transfer rate:          86.57 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:       35   35   0.4     35      39
Processing:    59   95 130.4     63    1245
Waiting:       59   94 130.5     62    1244
Total:         95  130 130.4     98    1280

Percentage of the requests served within a certain time (ms)
  50%     98
  66%    100
  75%    101
  80%    101
  90%    118
  95%    270
  98%    672
  99%    713
 100%   1280 (longest request)

================== 100 concurrent connections (sort script) ================== 
$ ab -n 10000 -c 100 http://http://benchmarkgae.appspot.com/sort

Server Software:        Google
Server Hostname:        benchmarkgae.appspot.com
Server Port:            80

Document Path:          /sort
Document Length:        1294 bytes

Concurrency Level:      100
Time taken for tests:   19.852328 seconds
Complete requests:      10000
Failed requests:        9802
   (Connect: 0, Length: 9802, Exceptions: 0)
Write errors:           0
Non-2xx responses:      9803
Total transferred:      11578572 bytes
HTML transferred:       10049409 bytes
Requests per second:    503.72 [#/sec] (mean)
Time per request:       198.523 [ms] (mean)
Time per request:       1.985 [ms] (mean, across all concurrent requests)
Transfer rate:          569.56 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:       35   35   0.6     35      43
Processing:    59  162 521.4     64    6494
Waiting:       58  161 521.4     63    6493
Total:         94  197 521.4     99    6532

Percentage of the requests served within a certain time (ms)
  50%     99
  66%    101
  75%    105
  80%    111
  90%    247
  95%    471
  98%   1104
  99%   3318
 100%   6532 (longest request)