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關於 LZ4 預設壓縮等級調整建議
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otto...@gmail.com
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Nov 14, 2021, 10:56:04 PM
11/14/21
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最近測試了一下,以 Lubuntu 21.10 測試
最佳的參數應該是之前的 -3,-3 壓縮速度會下降,但是減少的檔案大小在解壓縮就會提昇速度,是否有考慮將 LZ4 的預設參數改回 -3?
otto...@gmail.com
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Nov 15, 2021, 12:55:29 AM
11/15/21
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補充一下參考資料:
https://gregoryszorc.com/blog/2017/03/07/better-compression-with-zstandard/
LZ4 -1 之後壓縮率下降不少,損失的壓縮速度也還可以接受。
otto...@gmail.com
在 2021年11月15日 星期一上午11:56:04 [UTC+8] 的信中寫道:
Steven Shiau
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Nov 15, 2021, 7:54:17 AM
11/15/21
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當初我們會改成預設"-1"給lz4,主要就是要速度快。若要再改回"-3",好像跟其他壓縮法也就沒太大差異?
若要兼顧速度與壓縮比,我想zstd應該是最好的選項。
Steven
On 11/15/21 11:45 AM,
otto...@gmail.com
wrote:
> 最近測試了一下,以 Lubuntu 21.10 測試
>
> WeChat 圖片_20211115114253.png
>
> 最佳的參數應該是之前的 -3,-3
> 壓縮速度會下降,但是減少的檔案大小在解壓縮就會提昇速度,是否有考慮將 LZ4
> 的預設參數改回 -3?
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otto...@gmail.com
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Nov 15, 2021, 7:48:38 PM
11/15/21
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好的,要快速壓縮的確是LZ4 -1最快,那我再自行根據環境調整就好,謝謝。
Steven Shiau 在 2021年11月15日 星期一下午8:54:17 [UTC+8] 的信中寫道:
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