8000 esp32: need help: custom build is slower than stock from website · Issue #8029 · micropython/micropython · GitHub
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esp32: need help: custom build is slower than stock from website #8029

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petrkr opened this issue Nov 24, 2021 · 2 comments
Open

esp32: need help: custom build is slower than stock from website #8029

petrkr opened this issue Nov 24, 2021 · 2 comments
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port-esp32

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@petrkr
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petrkr commented Nov 24, 2021 •
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I trying speed up some TFT library and due LAN and ESPNow I still using own builds with SDK 3.3.2 (which is latest 1.14 upy). But I decided try first latest vanila uPy from website (night build) to compare if things speeds up meanwhile and yes they are.

But since I need do custom build due PSRAM and later with some pre-loaded libs etc I compile myself. But my custom build is in runtime slower than stock from night build.

I do not know why, so I want ask for help what can I have different in build environment. For now I use everything stock (git checkout, sdkcheckout, installed some binary toolchains by esp.idf 'install.sh' script)

Using SDK esp-idf tag 4.3 (not 4.3.1)
Using latest microypthon master (in time of writting it's 81f706a

benchmark of TFT draw some box:

Custom build 1.14 with 3.3.2 SDK with SPIRAM

  • 180ms (do not know what was freq now, but default)

official build 1.17 night 81f706a (https://micropython.org/download/esp32/)

  • 104ms @ 160MHz
  • 90m @ 240MHz

custom build 1.17 81f706a with 4.3 SDK

  • 140ms @ 160MHz
  • 110ms @ 240MHz

Would be nice to know to know used optimizations. For now I using board "GENERIC"
@petrkr
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petrkr commented Nov 25, 2021

Another test

custom build 1.17 81f706a with 4.5-dev SDK w/o SPI RAM
90ms @ 160MHz
70ms @ 240MHz

custom build 1.17 81f706a with 4.5-dev SDK with SPI RAM
115ms @ 160MHz
95ms @ 240MHz

@petrkr
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petrkr commented Nov 25, 2021

Another test:
seems official builds are from SDK 4.2.2 (or simillar 4.2.x)

custom build 1.17 81f706a with 4.2.2 SDK w/o SPI RAM
103ms @ 160MHz
85ms @ 240MHz

custom build 1.17 81f706a with 4.2.2 SDK with SPI RAM
150ms @ 160MHz
130ms @ 240MHz

Also free mem 109kB @ 4.2.2

others 4.3 and 4.5 only mem 62kB free, but I saw already issue about that #7962

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