Joined: 09 Feb 2005
|Posted: Mon Mar 24, 2014 7:48 am Post subject: Recommended squashfs decompressor (DECOMP_MULTI)
|Hi, I wonder with latest sources (3.13.5-ck) which squashfs decompressor implementation is recommended for a recent quad-core arch like the core-i5:
|This decompressor implementation uses up to two parallel decompressors per core. It dynamically allocates decompressors on a demand basis. |
From the comments I guess the DECOMP_MULTI also does a sharing per cpu but rather 2x per cpu, while the DECOMP_MULTI_PERCPU only does 1x per cpu. That would mean 8 procs on the quadcore for the first and 4 procs for the second. The first would mean higher parallelization, right?
|This decompressor implementation uses a maximum of one decompressor per core. It uses percpu variables to ensure decompression is load-balanced across the cores. |
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