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docs: Update USB transfer benchmarks 

It appears that the faster micro-controllers may have their transfer
speeds limited by the host USB controller.  Rerun the usb transfer
benchmarks using a high-speed hub.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-09-06 13:07:08 -04:00
parent 01d2183f59
commit f8b25a0104
1 changed files with 10 additions and 10 deletions
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docs/Benchmarks.md
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@ -298,7 +298,7 @@ commands per second is then `100000 * mcu_frequency / clock_diff`.
Note that this test may saturate the USB/CPU capacity of a Raspberry Note that this test may saturate the USB/CPU capacity of a Raspberry
Pi. The benchmarks below are with console.py running on a desktop Pi. The benchmarks below are with console.py running on a desktop
class machine. class machine with the device connected via a high-speed hub.
| MCU | Rate | Build | Build compiler | | MCU | Rate | Build | Build compiler |
| ------------------- | ---- | -------- | ------------------- | | ------------------- | ---- | -------- | ------------------- |
@ -306,15 +306,15 @@ class machine.
| stm32f042 (CAN) | 18K | c105adc8 | arm-none-eabi-gcc (GNU Tools 7-2018-q3-update) 7.3.1 | | stm32f042 (CAN) | 18K | c105adc8 | arm-none-eabi-gcc (GNU Tools 7-2018-q3-update) 7.3.1 |
| atmega2560 (serial) | 23K | b161a69e | avr-gcc (GCC) 4.8.1 | | atmega2560 (serial) | 23K | b161a69e | avr-gcc (GCC) 4.8.1 |
| sam3x8e (serial) | 23K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 | | sam3x8e (serial) | 23K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 |
| at90usb1286 (USB) | 75K | b161a69e | avr-gcc (GCC) 4.8.1 | | at90usb1286 (USB) | 75K | 01d2183f | avr-gcc (GCC) 4.8.1 |
| samd21 (USB) | 238K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 | | samd21 (USB) | 223K | 01d2183f | arm-none-eabi-gcc (Fedora 7.4.0-1.fc30) 7.4.0 |
| stm32f103 (USB) | 335K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 | | stm32f103 (USB) | 355K | 01d2183f | arm-none-eabi-gcc (Fedora 7.4.0-1.fc30) 7.4.0 |
| sam3x8e (USB) | 450K | a5aede52 | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 | | sam3x8e (USB) | 418K | 01d2183f | arm-none-eabi-gcc (Fedora 7.4.0-1.fc30) 7.4.0 |
| lpc1768 (USB) | 546K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 | | lpc1768 (USB) | 534K | 01d2183f | arm-none-eabi-gcc (Fedora 7.4.0-1.fc30) 7.4.0 |
| sam4s8c (USB) | 619K | a5aede52 | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 | | sam4s8c (USB) | 607K | 01d2183f | arm-none-eabi-gcc (Fedora 7.4.0-1.fc30) 7.4.0 |
| lpc1769 (USB) | 619K | b161a69e | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 | | lpc1769 (USB) | 628K | 01d2183f | arm-none-eabi-gcc (Fedora 7.4.0-1.fc30) 7.4.0 |
| samd51 (USB) | 620K | 8cd83b4c | arm-none-eabi-gcc (Fedora 7.1.0-5.fc27) 7.1.0 | | samd51 (USB) | 864K | 01d2183f | arm-none-eabi-gcc (Fedora 7.4.0-1.fc30) 7.4.0 |
| stm32f446 (USB) | 621K | aac51bdb | arm-none-eabi-gcc (Fedora 7.4.0-1.fc30) 7.4.0 | | stm32f446 (USB) | 870K | 01d2183f | arm-none-eabi-gcc (Fedora 7.4.0-1.fc30) 7.4.0 |
Host Benchmarks Host Benchmarks
=============== ===============