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Decompression speed is higher than bzip2, but lower than gzip. Compression can be much slower than gzip, and is slower than bzip2 for high levels of compression, and is most useful when a compressed file will be used many times. [4] [5] XZ Utils consists of two major components: xz, the command-line compressor and decompressor (analogous to gzip)
gzip is a file format and a software application used for file compression and decompression.The program was created by Jean-loup Gailly and Mark Adler as a free software replacement for the compress program used in early Unix systems, and intended for use by GNU (from which the "g" of gzip is derived).
Windows, DOS, Linux: Windows, DOS, Linux: Yes Yamazaki zipper archive. Compression format used in DeepFreezer archiver utility created by Yamazaki Satoshi. [18] Read and write support exists in TUGZip, IZArc and ZipZag.zip, .zipx application/zip ZIP: Originally DOS, now multiple Multiple Yes The most widely used compression format on Microsoft ...
The original version of Squashfs used gzip compression, although Linux kernel 2.6.34 added support for LZMA [11] and LZO compression, [12] Linux kernel 2.6.38 added support for LZMA2 compression (which is used by xz), [13] Linux kernel 3.19 added support for LZ4 compression, [14] and Linux kernel 4.14 added support for Zstandard compression.
compress - original Unix compress executable (gzip'd) Source Code for compress v4.0 (gzip'd sharchives) ZIP File containing a Windows port of the compress utility; source code to the current version of fcompress.c from compress; bit groups alignment - Explanation of bit groups alignment. lzws - New library and CLI, implemented without legacy code.
Version 1.7.0 added support for traditional PKWARE encryption. Version 1.8.0 added support for Zstandard and lzma. When opening existing archives, a strict consistency check can be requested. libzip is written in C but can be used from C++. Since version 1.1, libzip contains ziptool, a tool for modifying zip archives from the command line.
Zstandard was designed to give a compression ratio comparable to that of the DEFLATE algorithm (developed in 1991 and used in the original ZIP and gzip programs), but faster, especially for decompression. It is tunable with compression levels ranging from negative 7 (fastest) [6] to 22 (slowest in compression speed, but best compression ratio).
The Linux kernel implementation of fixed-probability decoding in rc_direct(), for performance reasons, does not include a conditional branch, but instead subtracts range from code unconditionally. The resulting sign bit is used to both decide the bit to return and to generate a mask that is combined with code and added to range .