Arduino Yun Bridge example from IDE.

ab - Apache HTTP server benchmarking tool

http://httpd.apache.org/docs/2.2/programs/ab.html

ab -n 20 -c 1 http://192.168.0.186/arduino/analog/2/123
Concurrency Level:      1
Time taken for tests:   3.425 seconds
Complete requests:      20
Failed requests:        0
Write errors:           0
Non-2xx responses:      20
Total transferred:      2100 bytes
HTML transferred:       0 bytes
Requests per second:    5.84 [#/sec] (mean)
Time per request:       171.275 [ms] (mean)
Time per request:       171.275 [ms] (mean, across all concurrent requests)
Transfer rate:          0.60 [Kbytes/sec] received

Connection Times (ms)
             min  mean[+/-sd] median   max
Connect:        0    0   0.0      0       0
Processing:   164  171   7.9    169     192
Waiting:      153  159   6.2    156     171
Total:        164  171   7.9    169     192

171.275 [ms] (0.17 s) is average speed of bridge speed, and should meet average application's requirement.