Talk:Data compression algorithms and tools

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Compressed filesystems?

Data compression has been around for decades, but they are inefficient when it comes to redundant data that is to be included. This inefficiency causes extra CPU time to be spent on compressing them, and potentially creating a larger overall file size. While compressed filesystems are used more notably under Linux, particularly as a filesystem image for the live system[1], they can be used for other purposes e.g. [2].

A few common/notable compressed filesystems comes to mind:

  • SquashFS
    • Has been included in Linux kernel for a very long time.
    • Offers a number of compression algorithms, including xz, which is/was widely used on a number of Linux distributions.
    • Can be opened with 7z, in which 7z is also available for Windows.
  • EROFS
    • Upcoming/currently popular alternative to SquashFS in that it is more actively developed.
    • Offers features not found in SquashFS.[3]
  • DWARFS
    • Offers even more higher compression than SquashFS. At maximum compression, it can be a performance trade-off with modern computers at the expense of producing really small filesystems.
    • Has builds for Windows.

Any thoughts on inclusion of this to the page or? Anonymoususer852 (talk) 10:17, 16 July 2025 (UTC)

  1. ↑ EROFS for live media - Fedora Project
  2. ↑ SquashFS as a forensic container - Foo.be
  3. ↑ Features and Comparison - EROFS filesystem project
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