CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU:

General informations

The Linux kernel configuration item CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU has multiple definitions:

found in fs/squashfs/Kconfig

The configuration item CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU:

• prompt:
• type: bool
• depends on: CONFIG_SQUASHFS
• defined in fs/squashfs/Kconfig
• found in Linux kernels: 6.2–6.8, 6.9-rc+HEAD

Help text

(none)

Use percpu multiple decompressors for parallel I/O found in fs/squashfs/Kconfig

The configuration item CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU:

• prompt: Use percpu multiple decompressors for parallel I/O
• type: bool
• depends on: (none)
• defined in fs/squashfs/Kconfig
• found in Linux kernels: 3.13–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.1, 6.1+HEAD

Help text

By default Squashfs uses a single decompressor but it gives poor performance on parallel I/O workloads when using multiple CPU machines due to waiting on decompressor availability.

This decompressor implementation uses a maximum of one decompressor per core. It uses percpu variables to ensure decompression is load-balanced across the cores.

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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