Memory allocations fail in low memory situations, but too early

[davepl]

If you increase the number of buffers to put any memory pressure on the system, various allocations will start to fail. Even allocating 4K when 50K is free, and 34K is the largest block, can fail.

I've mostly experienced this on builds like M5DEMO where there is no PSRAM.

[robertlipe]

Reproducible info, please. Is colors ever in use or specific effects or options or such? Web server serving, etc. I'll do a general look. I'm already deeply suspicious of our heavy use of String which is known to be terrible at fragmenting and copying memory, but won't guess further without profiles in hand.

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On Sun, Dec 10, 2023, 4:33 PM David W Plummer ***@***.***> wrote: If you increase the number of buffers to put any memory pressure on the system, various allocations will start to fail. Even allocating 4K when 50K is free, and 34K is the largest block, can fail. I've mostly experienced this on builds like M5DEMO where there is no PSRAM. — Reply to this email directly, view it on GitHub <#565>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACCSD366E72XHXA46KERY7LYIY2E5AVCNFSM6AAAAABAO4DYTKVHI2DSMVQWIX3LMV43ASLTON2WKOZSGAZTINJWGI3DAMY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[rbergen]

There is some documentation about this in discussion #562, specifically the thread that starts with this comment: #562 (comment). That concerns the Fanset project on the M5StickC Plus with current dependencies, and WiFi and the web server enabled.