What's your benchmark result?

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I want to know how my benchmark result compared to others in the real world, and if they are really good so I can try to do better. And what is the limitation of this benchmark test?
I would like to hear tips and tricks to get the best (Besides the clear practices), and your display type, display interface, MCU, and any other relative information. Mine is :

MCU: STM32 H7
Display: Ili9488
Display interface: FMC, DBI type B 16-bit RGB565.
GPU: GPU is enabled in the config file, and regular DMA is used to transfer data pixels to FMC display interface.
Compiler optimization: -O2 (“Optimize More”).
bufffers: 2 buffers, with size = DISP_HOR_RES * 70.

picture

Image (4)
Image (4)1920×2560 613 KB

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Wow, these are pretty good results!

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Hi, I’ve managed to get 143 FPS (weighted) on STM32F746-Discovery board.

My setup:

  • Core: Cortex-M7
  • System clock: 200MHz
  • SDRAM clock: 100MHz
  • Lvgl buffer located in DTCMRAM (64KB)
  • LCD 480x272 driven by LTDC with framebuffer in SDRAM
  • ICache & DCache enabled
  • buffer flushing by DMA2D
  • ‘-Os’ code optimization

Video:

Code:

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Wow, very nice!

How did moving the LVGL buffer to DTCMRAM affect the performance? Is is slower in “normal RAM”?

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Actually it looks like there is no difference comparing to “normal RAM” but DTCMRAM is not cachable, so I don’t have to bother with invalidating cache when using DMA2D :wink:
With ‘-O3’ optimization it gets even more FPS: 167, but that’s obvious.
Anyway I’m happy with that performance :wink:

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