[falklindner]

snappy.decompress writes into a bytearray instead of a BytesIO, so it needs no memoryview at all. The PyPy export problem #148 fixed can't occur, and the slowdown since #148 is gone:

large benchmark	main	this PR
CPython 3.13	157 µs	85 µs
PyPy 8.0.1	265 µs	16 µs

Tested with tox -e lint,3.10,3.11,3.13,pypy3.10,pypy3.11,benchmark on Linux.

Closes #152

🤖 Generated with Claude Code

https://claude.ai/code/session_01HJvjcGbjsG74UunzfT5zNE

[codecov]

Codecov Report

❌ Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (dd93fb4) to head (c1aa3ee).

Files with missing lines	Patch %	Lines
dissect/util/compression/snappy.py	0.00%	7 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #153   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files         31      31           
  Lines       2180    2179    -1     
=====================================
+ Misses      2180    2179    -1     

Flag	Coverage Δ
unittests	0.00% <0.00%> (ø)

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[codspeed]

Merging this PR will improve performance by 56.93%

1 warning

⚠️ Base and head ran on different runner types

Some benchmarks with significant performance changes were compared across different runner types, so the changes might not come from the code. Run base and head on the same runner type, or use CodSpeed Macro Runners for more stable results.

Learn more about Macro Runners

Open the report in CodSpeed to investigate

⚡ 2 improved benchmarks
✅ 37 untouched benchmarks

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	test_benchmark_snappy_decompress[large]	1,148.3 µs	596.9 µs	+92.4%
⚡	test_benchmark_snappy_decompress[basic]	69.7 µs	54.5 µs	+28%

Tip

Curious why performance improved? Comment @codspeedbot explain why performance improved on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing falklindner:fix/snappy-bytearray (c1aa3ee) with main (dd93fb4)}