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Further performance improvements

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Further removed multiple pointer instances
Re-use decompression readers (except zstd due to bugs)
This commit is contained in:
Caleb Gardner
2025-04-10 11:20:55 -05:00
parent 6b0e9ef2c6
commit 6224c4be41
11 changed files with 66 additions and 36 deletions
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README.md
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@@ -28,15 +28,14 @@ As of `v1.0`, FUSE capabilities has been moved to [a separate library](https://g
## Issues
* Significantly slower then `unsquashfs` when nested images
* Noticably slower then `unsquashfs` for extraction, especially on larger images.
* This seems to be related to above along with the general optimization of `unsquashfs` and it's compression libraries.
* Not to mention it's written in C
* Times seem to be largely dependent on file tree size and compression type.
* My main testing image (~100MB) using Zstd takes about 5x longer.
* An Arch Linux airootfs image (~780MB) using XZ compression with LZMA filters takes about 30x longer.
* A Tensorflow docker image (~3.3GB) using Zstd takes about 12x longer.
* My main testing image (~100MB) using Zstd takes ~2x longer.
* An Arch Linux airootfs image (~780MB) using XZ compression with LZMA filters takes ~28x longer.
* A Tensorflow docker image (~3.3GB) using Zstd takes ~3x longer.
Note: These numbers are using `FastOptions()`. `DefaultOptions()` takes about 2x longer.
Note: These numbers are using `FastOptions()`. `DefaultOptions()` takes ~2x longer.
## Recommendations on Usage