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doesn't (yet) bind against the full advanced API, just enough to support parallel compression.
This was referenced May 1, 2026
jkachmar
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May 1, 2026
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| , zstd_c_compressionLevel | ||
| , zstd_c_nbWorkers | ||
| , zstd_c_jobSize | ||
| , zstd_c_overlapLog | ||
| , zstd_e_continue | ||
| , zstd_e_flush | ||
| , zstd_e_end | ||
| , zstd_reset_session_only | ||
| , zstd_reset_parameters | ||
| , zstd_reset_session_and_parameters |
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i pretty much reflected the libzstd names as-is; i wasn't really sure if there was a better approach as compared to just exposing them all from this module
jkachmar
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May 1, 2026
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| -- | @ZSTD_c_overlapLog@ compression parameter, sets the overlap of consecutive | ||
| -- jobs in multi-threaded mode, as a fraction of window size; larger values | ||
| -- increase compression ratio, but decrease speed. | ||
| -- | ||
| -- Range @0..9@: | ||
| -- | ||
| -- * @0@ = library default, varies between 6 and 9 depending on compression strategy | ||
| -- * @1@ = no overlap | ||
| -- * @9@ = full window | ||
| -- | ||
| -- Each intermediate rank halves the previous overlap: | ||
| -- | ||
| -- * @9@: @w@ | ||
| -- * @8@: @w\/2@ | ||
| -- * @7@: @w\/4@ | ||
| -- | ||
| -- ...and so on until @1@ (none). |
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i think the Python library's overlap_log documentation is a little better than what i wrote here
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doesn't (yet) bind against the full advanced API, just enough to support parallel compression.