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67 investigate switching out zlib ng for libdeflate #72
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EmilDohne
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67-investigate-switching-out-zlib-ng-for-libdeflate
May 27, 2024
Merged
67 investigate switching out zlib ng for libdeflate #72
EmilDohne
merged 29 commits into
master
from
67-investigate-switching-out-zlib-ng-for-libdeflate
May 27, 2024
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…D intrinsics as well as more efficient parsing
…ue ref but just a ref instead since passing an r-value ref made no sense without storing it
… changing includes after refactor
… resulting in speedups
…fer instead of allocating and returning the buffer
…ce that is more appropriate
…e difference between all configurations was roughly equal
ubuntu-latest -> ubuntu-24.04 macos-latest -> macos-13 macos-14 -> macos-latest
…has no support for exceptions
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This turned out to be quite a large PR as I took this moment to refactor a lot of the compression code and optimize the way the PhotoshopAPI internally compresses and decompresses data by reusing a swap buffer rather than reallocating buffers only to discard them away later.
Additionally we now use libdeflate rather than zlib_ng for compression and decompression as this allows for much greater decompression speeds. We also added memory-mapped files for read operations as this provided significant improvement in read performance.
Overall the speedups are:
While 32-bit reads did get slightly slower with our benchmark data we did see speedups in all other cases which justifies this change. I will look into equalizing 32-bit read speeds in the future