Split heavy commands out of corebox into standalone binaries#14
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mikeysklar wants to merge 1 commit into
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Split heavy commands out of corebox into standalone binaries#14mikeysklar wants to merge 1 commit into
mikeysklar wants to merge 1 commit into
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corebox is a ~212 KB busybox multicall binary, so running any of its applets (df/grep/sed/head/...) needs a single 256 KB contiguous block (order-6) on this no-MMU target. Fragmentation eventually denies that even when total free memory is fine, giving binfmt_flat order:6 allocation failures (errno -12) after some uptime. Build the most-used heavy text tools as their own ~80-120 KB binaries (the same way cat/ls/ps already are), so each only needs a 128 KB contiguous block (order-5) -- half the requirement, far likelier to survive fragmentation. corebox keeps the colder applets and shrinks to ~157 KB. Promoted to standalone: grep (with egrep/fgrep), sed, df, head, tail, wc, cut, tr, uname. Verified on Fruit Jam hardware: grep/df run as order-5 standalones in memory states where the order-6 monolith failed to load. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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coreboxis a ~212 KB busybox multicall binary, so running any of its applets (df/grep/sed/head/...) needs a single 256 KB contiguous block (order-6) on this no-MMU target. Fragmentation eventually denies that even when total free memory looks fine, givingbinfmt_flatorder:6 allocation failures (errno -12) after some uptime.This builds the most-used heavy text tools as their own ~80–120 KB binaries (the same way cat/ls/ps already are), so each only needs a 128 KB contiguous block (order-5) — half the requirement, and far likelier to survive fragmentation.
coreboxkeeps the colder applets and shrinks to ~157 KB.Promoted to standalone: grep (with egrep/fgrep), sed, df, head, tail, wc, cut, tr, uname.
Note: a coarse 2-way split does not help — two ~150 KB halves are both still order-6. The ~92 KB busybox/uClibc floor per binary means it has to be individual binaries to drop an order.
Verified on Fruit Jam hardware: grep/df run as order-5 standalones in memory states where the order-6 monolith failed to load.
🤖 Generated with Claude Code