This package based on LZMA reader from C++ code LzmaSpec.cpp from specification.
The reader1 and reader2 has constructor specially for sevenzip package.
I have private 1GB tar file, compressed by lzma-utility from xz package.
Environment:
- os: macOS Ventura 13.6.1 (22G313)
- arch: amd64
- cpu: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
Decompression speed:
- 7z (21.07) - 52.37 MiB/s (+103.77%)
- xz (5.4.3) - 43.99 MiB/s (+71.17%)
- my (v0.0.1-alpha9) - 42.59 MiB/s (+65.71%)
- ulikunitz/xz (orisano fork at commit 4b4c597)- 25.70 MiB/s (compared with this speed)
This reader more fast than package of ulikunitz/xz by reducing allocations, inlining hot functions and unbranching.