Thin Server: The Thin Ruby web server incorporates The Mongrel Parser, Eventmachine and Rack.
Fibers: Ruby Fibers allow you to write asynchronous code in a linear structure.
EM-Synchrony: Provides Eventmachine compatible code for many common rails applications.
EM-PostgreSQL: Provides a postgres driver that operates asynchronously.
Protobuf: Provides an efficient and standardized method of encoding data to be transferred between the device and the server. Chosen over other encoding protocols for it's support in both the Rails and Arduino environments.
- Go to the root directory and click "Register A New Device"
- Take note of both your device id and registration key. The device id will be how you view messages sent from the device and the registration key will be required to authenticate messages from your device.
- Enter that information at the top of the examples/arduino/device/device.ino arduino code
Without eventmachine, the server could not handle more than 35 concurrent requests without having to reset the connection. With eventmachine, the server was able to handle at least 200 concurrent requests without reseting the connection, and processed them at 47.46 requests/second.
ab -c 200 -n 1000 http://127.0.0.1:3000/devices/14/messages This is ApacheBench, Version 2.3 <$Revision: 655654 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/Server Software: thin
Server Hostname: 127.0.0.1
Server Port: 3000
Document Path: /devices/14/messages
Document Length: 1310 bytes
Concurrency Level: 200
Time taken for tests: 21.072 seconds
Complete requests: 1000
Failed requests: 0
Write errors: 0
Total transferred: 1857000 bytes
HTML transferred: 1310000 bytes
Requests per second: 47.46 [#/sec] (mean)
Time per request: 4214.422 [ms] (mean)
Time per request: 21.072 [ms] (mean, across all concurrent requests)
Transfer rate: 86.06 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 2 3.3 0 10
Processing: 822 3832 839.3 4181 4368
Waiting: 413 3809 855.4 4163 4355
Total: 831 3834 836.6 4181 4375
Percentage of the requests served within a certain time (ms)
50% 4181
66% 4209
75% 4221
80% 4229
90% 4238
95% 4246
98% 4267
99% 4273
100% 4375 (longest request)
Benchmarking 127.0.0.1 (be patient)
Completed 100 requests
apr_socket_recv: Connection reset by peer (104)
Total of 152 requests completed
Benchmarking 127.0.0.1 (be patient)
Completed 100 requests
Completed 200 requests
apr_socket_recv: Connection reset by peer (104)
Total of 239 requests completed
Server Software: WEBrick/1.3.1
Server Hostname: 127.0.0.1
Server Port: 3000
Document Path: /devices/14/messages
Document Length: 1310 bytes
Concurrency Level: 35
Time taken for tests: 28.071 seconds
Complete requests: 1000
Failed requests: 0
Write errors: 0
Total transferred: 1998000 bytes
HTML transferred: 1310000 bytes
Requests per second: 35.62 [#/sec] (mean)
Time per request: 982.471 [ms] (mean)
Time per request: 28.071 [ms] (mean, across all concurrent requests)
Transfer rate: 69.51 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 7 83.3 0 1000
Processing: 25 961 140.9 972 1970
Waiting: 23 958 141.0 969 1970
Total: 25 968 161.1 972 2198
Percentage of the requests served within a certain time (ms)
50% 972
66% 992
75% 1009
80% 1019
90% 1045
95% 1065
98% 1099
99% 1855
100% 2198 (longest request)
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