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CONFIG_SQUASHFS_DECOMP_MULTI: Use multiple decompressors for parallel I/O

General informations

The Linux kernel configuration item CONFIG_SQUASHFS_DECOMP_MULTI:

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.

If you have a parallel I/O workload and your system has enough memory, using this option may improve overall I/O performance.

This decompressor implementation uses up to two parallel decompressors per core. It dynamically allocates decompressors on a demand basis.



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