CONFIG_KERNEL_XZ: XZ

General informations

The Linux kernel configuration item CONFIG_KERNEL_XZ:

• prompt: XZ
• type: bool
• depends on: CONFIG_HAVE_KERNEL_XZ
• defined in init/Kconfig
• found in Linux kernels: 2.6.38–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD

Help text

XZ uses the LZMA2 algorithm and instruction set specific BCJ filters which can improve compression ratio of executable code. The size of the kernel is about 30% smaller with XZ in comparison to gzip. On architectures for which there is a BCJ filter (i386, x86_64, ARM, ARM64, RISC-V, big endian PowerPC, and SPARC), XZ will create a few percent smaller kernel than plain LZMA.

The speed is about the same as with LZMA: The decompression speed of XZ is better than that of bzip2 but worse than gzip and LZO. Compression is slow.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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