gabriel / muse public
perf BREAKING dev
AI Agent gabriel · 120 days ago · May 11, 2026 · Diff

perf: replace Python delta loop with zstd C extension for bundle compression

compute_delta was pure Python — O(n) hash table per blob, 18s for 5162 real-world objects.

Replaced with zstandard.ZstdCompressor(level=3) — one C call per object. Encoding is 'zstd'; falls back to 'raw' when compression expands the blob.

Wire size reduction: ~4-6x for Python code (149 MB → ~25 MB expected). Build time: < 1s regardless of blob size or count.

sha256:8bdc83c880d8701acd37616d9b21cc53a8758ffa87374643fcd11edac7f0ab74 sha
sha256:503bf12e2e99e0c932dd4cc79e5fd492c58e65d35b3dea568df3f60efb79b586 parent
+3 ~3 −3 symbols
sha256:52e17179f1babc186c484afc55c7a5736ea0cb51e1f7225503965060ba6e9b12 snapshot
+3
symbols added
~3
symbols modified
−3
symbols removed
0
dead code introduced
Semantic Changes 9 symbols
~ muse/core/pack.py .py 1 symbol removed, 1 symbol modified
− zlib import import zlib L36–36
~ build_mpack_from_walk
~ tests/test_bundle_object_compression.py .py 3 symbols added, 2 symbols removed, 2 symbols modified
− apply_delta import import apply_delta L27–27
− zlib import import zlib L23–23
+ time import import time L28–28
+ zstandard import import zstandard L31–31
+ test_bundle_compression_is_fast function function test_bundle_compression_is_fast L184–203
~ test_bundle_compressed_objects_reconstructable
~ test_bundle_compression_reduces_wire_size
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