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I've spent the last few months working on this codec.
It has the following characteristics:
- SOTA decompression throughput in its ratio class
- Decent ratios (comparable to LZ4 at high effort levels)
- Slow compression
Results on the tarred Silesia corpus on Intel x86-64 follow:
codec decode ratio encode
misa77 -0 5219 MB/s 42.64% 54.5 MB/s
misa77 -1 4274 MB/s 39.65% 51.2 MB/s
lz4 2505 MB/s 47.59% 371 MB/s
lz4hc -12 2531 MB/s 36.45% 7.31 MB/s
Discussion (7 Comments)Read Original on HackerNews
I don't see much in your README that talks about how a developer would integrate misa into their code. I might suggest some basic code samples to help a developer integrate misa decode into their project.
Congrats, looks like a cool project.
From memory, 2505 MB/sec also sounds on the low side for LZ4 on a modern CPU?
In short, my decompressor is very simple, and a naive safe version of the decompressor is only about 5% slower than the current unsafe one (and I will add this safe version in v0.3.0).
As for the raw throughput numbers being low here, it's because Intel Turbo (frequency boost) was disabled for stability, and the CPU was running at a fixed frequency of 2.1 GHz (I've confirmed that the relative performance scales similarly even with Turbo enabled).