Document --size-hint
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@ -144,6 +144,13 @@ the last one takes effect.
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Due to the chaotic nature of dynamic adaptation, compressed result is not reproducible.
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Due to the chaotic nature of dynamic adaptation, compressed result is not reproducible.
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_note_ : at the time of this writing, `--adapt` can remain stuck at low speed
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_note_ : at the time of this writing, `--adapt` can remain stuck at low speed
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when combined with multiple worker threads (>=2).
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when combined with multiple worker threads (>=2).
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* `--size-hint=#`:
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When handling input from a stream, `zstd` must guess how large the source size
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will be when optimizing compression parameters. If the stream size is relatively
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small, this guess may be a poor one, resulting in a higher compression ratio than
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expected. This feature allows for controlling the guess when needed.
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Exact guesses result in better compression ratios. Overestimates result in slightly
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degraded compression ratios, while underestimates may result in significant degradation.
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* `--rsyncable` :
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* `--rsyncable` :
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`zstd` will periodically synchronize the compression state to make the
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`zstd` will periodically synchronize the compression state to make the
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compressed file more rsync-friendly. There is a negligible impact to
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compressed file more rsync-friendly. There is a negligible impact to
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