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#lzma2 — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #lzma2, aggregated by home.social.

  1. Ich archiviere immer mal wieder größere Dateimengen in Archiven, nutze dafür #7zip (mit #LZMA2 und Ultra-Compression). Mit der Option "qs" und einer Dictionary Size von 1024MB werden die Archive - je nach Dateien - nochmal erheblich kleiner.
    Unübertroffen ist aber #ZPAQ (dank Dedup-Algorithmus) - unglaublich, wie klein die Archive werden (Compression UND Decompression sind aber CPU- und zeitintensiv). ZPAQ hat per se keine GUI, ist aber in #PeaZIP integriert.

  2. Any experts here?

    I compressed an archive of nearly identical files (snapshots of the list of my tabs) in two ways.

    First, as .tar.zstd, and that gave me 325MiB.

    Then, I used with , and got only 35MiB. Much closer to what I expected.

    What gives? Is stringing files together in a way that prevents from detecting duplicate data across files?

  3. Any #compression experts here?

    I compressed an archive of nearly identical files (snapshots of the list of my tabs) in two ways.

    First, as .tar.zstd, and that gave me 325MiB.

    Then, I used #7zip with #lzma2, and got only 35MiB. Much closer to what I expected.

    What gives? Is #tar stringing files together in a way that prevents #zstd from detecting duplicate data across files?