Lines Matching +full:parallel +full:- +full:in

1 # SPDX-License-Identifier: GPL-2.0-only
3 	tristate "SquashFS 4.0 - Squashed file system support"
7 	  Read-Only File System).  Squashfs is a highly compressed read-only
9 	  to compress both files, inodes and directories.  Inodes in the system
16 	  Squashfs is intended for general read-only filesystem use, for
17 	  archival use (i.e. in cases where a .tar.gz file may be used), and in
19 	  and tools are available from github.com/plougher/squashfs-tools.
22 	  inserted in and removed from the running kernel whenever you want),
70 	bool "Select the parallel decompression mode during mount"
78 	  Compile all parallel decompression modes and specify the
83 	prompt "Select decompression parallel mode at compile time"
88 	  decompression.  Each one exhibits various trade-offs between
91 	  If in doubt, select "Single threaded compression"
97 	  Traditionally Squashfs has used single-threaded decompression.
102 	bool "Use multiple decompressors for parallel I/O"
106 	  poor performance on parallel I/O workloads when using multiple CPU
109 	  If you have a parallel I/O workload and your system has enough memory,
112 	  This decompressor implementation uses up to two parallel
117 	bool "Use percpu multiple decompressors for parallel I/O"
121 	  poor performance on parallel I/O workloads when using multiple CPU
126 	  decompression is load-balanced across the cores.
135 	  Use threads= to set the decompression parallel mode and the number of threads.
159 	  reducinng performance in workloads like fio-based benchmarks.
165 	  Enabling this option restores performance to pre-regression levels by
166 	  caching all compressed blocks in the page cache, reducing disk I/O for
168 	  concern in memory-constrained environments.
180 	  file systems.  It offers a good trade-off between compression
196 	  LZ4 is not the standard compression used in Squashfs and so most
211 	  LZO is not the standard compression used in Squashfs and so most
226 	  XZ is not the standard compression used in Squashfs and so most
240 	  ZSTD is not the standard compression used in Squashfs and so most
252 	  unaligned in Squashfs, should reduce latency.
260 	  accesses of files in filesystem order) on all media.
268 	bool "Additional option for memory-constrained systems"
282 	  has to re-read fragments less often from disk, at the expense