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docs: Add information on command parsing benchmarks 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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Kevin O'Connor 2018-11-16 20:16:56 -05:00
parent 52fa91fb9a
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docs/Debugging.md
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@ -374,6 +374,34 @@ The test was last run on commit `b161a69e` with gcc version
stepper result is `SET ticks 277`, the best dual stepper result is
`SET ticks 410`, and the best three stepper result is `SET ticks 664`.
## Command dispatch benchmark ##
The command dispatch benchmark tests how many "dummy" commands the
micro-controller can process. It is primarily a test of the hardware
communication mechanism. The test is run using the console.py tool
(described above). The following is cut-and-paste into the console.py
terminal window:
```
DELAY {clock+freq} get_uptime
FLOOD 100000 0.0 end_group
get_uptime
```
When the test completes, determine the difference between the clocks
reported in the two "uptime" response messages. The total number of
commands per second is then `100000 * mcu_frequency / clock_diff`.
| MCU | Rate | Build | Build compiler |
| ------------------- | ---- | -------- | -------------------- |
| atmega2560 (serial) | 23K | b161a69e | avr-gcc (GCC) 4.8.1) |
| at90usb1286 (USB) | 75K | b161a69e | avr-gcc (GCC) 4.8.1) |
| sam3x8e (serial) | 23K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 |
| pru (shared memory) | 4.8K | b161a69e | pru-gcc (GCC) 8.0.0 20170530 (experimental) |
| stm32f103 (USB) | 335K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 |
| lpc1768 (USB) | 546K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 |
| lpc1769 (USB) | 619K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 |
| samd21 (USB) | 238K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 |
Host Benchmarks
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