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moby: ship with way higher CMA by default

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Colin 2024-05-19 10:39:17 +00:00
parent 2d67b78ca4
commit 26e347f38c
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hosts/by-name/moby/kernel.nix
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@ -78,8 +78,12 @@ in
#
# the default CMA seems to be 32M.
# i was running fine with 256MB from 2022/07-ish through 2022/12-ish, but then the phone quit reliably coming back from sleep (phosh): maybe a memory leak?
# bumped to 512M on 2023/01
# bumped to 1536M on 2024/05
# `cat /proc/meminfo` to see CmaTotal/CmaFree if interested in tuning this.
"cma=512M"
# kernel param mentioned here: <https://cateee.net/lkddb/web-lkddb/CMA_SIZE_PERCENTAGE.html>
# i think cma mem isn't exclusive -- it can be used as ordinary `malloc`, still. i heard someone suggest the OS default should just be 50% memory to CMA.
"cma=1536M"
# 2023/10/20: potential fix for the lima (GPU) timeout bugs:
# - <https://gitlab.com/postmarketOS/pmaports/-/issues/805#note_890467824>
"lima.sched_timeout_ms=2000"