Throughput Benchmark
====================

The throughput is measured between two identical machines using the 
throughput application available in the |me| example directory.

The test environment consists of:

- 2 Raspberry Pi Model B+ with ARMv7 and 1 GB of memory
- Linux 4.14
- 1 Gbps network 

Interpretation of the measurements:

- Size - The size of the DDS sample payload (UDP overhead is not included)
- Demand - How many samples of the given size is written in a burst before a 
  short delay (10ms). For example, a demand of 110 means that 110 samples are 
  written in a burst followed by a 10ms delay before 110 samples is written 
  again. This burst-delay-burst cycle continues for 1s before a new round is 
  started.
- Samples - The number of samples written.
- Samples/sec - The number of samples written per second.
- Mbit/s - The bandwidth utilization for the payload based on Size and 
  Samples/sec.
- Samples Lost - On the subscriber size the number of samples received is 
  counted against what is expected.
- Samples Rejected - OLn the subscriber size the number of samples rejected 
  by |me| is counted.
- CPU - The CPU load reached during a test. Note that how the CPU load is 
  measured varies between platforms and is an approximation.
- Memory - The total amount of memory used during the test. This number 
  should be constant as RTI Connext DDS Micro allocates all memory at creation time.

Publisher Throughput
....................

+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| Size     | Demand      | Samples   | Samples/sec  | Mbit/sec  | Samples lost  |  Samples Rejected |
+==========+=============+===========+==============+===========+===============+===================+
| 16       |     10      |    33150  |  1657.33     | 0.212139  |       0       |       0           |
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 16       |    110      |   183370  |  9165.779775 | 1.17      |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 16       |    210      |   257250  |  12859.12    | 1.65      |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 16       |    310      |   210800  |  10528.63    | 1.35      |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 32       |     10      |    33590  |  1679.19     | 0.43      |       0       |       0           |
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 32       |    110      |   204160  |  10203.62    | 2.61      |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 32       |    210      |   241710  |  12079.59    | 3.10      |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 32       |    310      |   269080  |  13450.27    | 3.44      |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 64       |     10      |    34200  |  1709.68     | 0.88      |       0       |       0           |
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 64       |    110      |   203060  |  10149.83    | 5.20      |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 64       |    210      |   254100  |  12699.31    | 6.5       |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 64       |    310      |   208010  |  10399.80    | 5.32      |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 128      |     10      |    33670  |  1683.31     | 1.72      |       0       |       0           |
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 128      |    110      |   184580  |  9228.79     | 9.4       |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 128      |    210      |   232890  |  11641.43    | 11.92     |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 128      |    310      |   214830  |   10728.35   | 10.99     |       0       |       0           | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+


Subscriber Throughput
.....................

+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| Size     | Demand      | Samples   | Samples/sec  | Mbit/sec  | Samples lost  |  Samples Rejected |
+==========+=============+===========+==============+===========+===============+===================+
| 16       |    10       |     33150 |      1657.23 |    0.21   |       0       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 16       |   110       |    183362 |      9167.67 |   1.17    |       8       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 16       |   210       |     33150 |      1657.23 |    0.21   |       0       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 16       |   310       |     33150 |      1657.23 |    0.21   |       0       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 32       |    10       |     33590 |      1679.00 |    0.21   |       0       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 32       |   110       |    204118 |     10202.81 |   1.17    |       8       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 32       |   210       |    240372 |     12010.05 |    0.21   |       0       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 32       |   310       |    266783 |     13338.10 |    0.21   |       0       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 64       |    10       |     34200 |      1710.48 |    0.88   |       0       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 64       |   110       |    202855 |     10139.21 |   5.19    |       205     |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 64       |   210       |    251810 |     12585.23 |   6.44    |       2290    |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 64       |   310       |    207959 |     10396.54 |   5.32    |       51      |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 128      |    10       |     33670 |      1683.66 |   1.72    |       0       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 128      |   110       |    184410 |     9221.85  |  9.44     |       170     |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 128      |   210       |    230254 |    11510.24  |  11.79    |     2636      |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+
| 128      |   310       |    213743 |    10675.63  |  10.93    |     108       |         0         | 
+----------+-------------+-----------+--------------+-----------+---------------+-------------------+