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/f-stack/freebsd/contrib/openzfs/tests/zfs-tests/tests/functional/history/
H A Dhistory_002_pos.ksh73 mountpoint none compression lz4
74 compression on compression off
75 compression lzjb acltype off
87 compression gzip compression gzip-$((RANDOM%9 + 1))
88 compression zstd compression zstd-$((RANDOM%9 + 1))
102 compression on compression off
103 compression lzjb aclmode discard
115 compression gzip compression gzip-$((RANDOM%9 + 1))
116 compression zstd compression zstd-$((RANDOM%9 + 1))
130 compression on compression off
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H A Dhistory_003_pos.ksh71 zfs set compression=off $spool/$sfs
72 zfs set compression=on $spool/$sfs
73 zfs set compression=off $spool/$sfs
74 zfs set compression=on $spool/$sfs
75 zfs set compression=off $spool/$sfs
/f-stack/dpdk/doc/guides/compressdevs/
H A Disal.rst7 The ISA-L PMD (**librte_compress_isal**) provides poll mode compression &
9 which implements the deflate algorithm for both Deflate(compression) and Inflate(decompression).
35 To enable a checksum in the driver, the compression and/or decompression xform
49 If you request a checksum for compression or decompression,
60 i.e. ZLIB L1 gives a compression ratio similar to ISA-L L1.
65 The compressdev API has 10 levels, 0-9. ISA-L has 4 levels of compression, 0-3.
76 …| 0 | No compression, Not Supported | --- …
78 …| 1 | Dynamic (Fast compression) | 1 …
102 The above table only shows mapping when API calls for dynamic compression.
103 For fixed compression, regardless of API level, internally ISA-L level 0 is always used.
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H A Dqat_comp.rst7 The QAT compression PMD provides poll mode compression & decompression driver
18 QAT compression PMD has support for:
39 * Compressdev level 0, no compression, is not supported.
45 * Stateful compression is not supported.
51 The QAT compression PMD is built by default with a standard DPDK build.
/f-stack/freebsd/contrib/zstd/programs/
H A Dzstd.1.md18 `zstd` is a fast lossless compression algorithm and data compression tool,
121 Does not spawn a thread for compression, use a single thread for both I/O and compression.
166 compression ratio, and the faster compression levels will see a small
167 compression speed hit.
275 They set the compression level and number of threads to use during compression, respectively.
287 `-#` for compression level and `-T#` for number of compression threads.
428 advanced compression options.
446 improves compression ratio.
468 compression.
479 compression ratio but decreases compression speed.
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H A DREADME.md111 which can be loaded before compression and decompression.
114 These compression gains are achieved while simultaneously providing faster compression and decompre…
128 CLI includes in-memory compression benchmark module for zstd.
148 -# : # compression level (1-19, default: 3)
170 Advanced compression arguments :
224 that `zstd` will use for compression, which by default is `1`.
233 `-#` for compression level and `-T#` for number of threads.
247 Below are graphs comparing the compression speed, compression ratio, and
268 on compression speed, and the decompression speed doubles.
272 compression speed (for lower levels) with minimal change in compression ratio.
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/f-stack/freebsd/contrib/zstd/examples/
H A DREADME.md4 - [Simple compression](simple_compression.c) :
10 Only compatible with simple compression.
14 - [Multiple simple compression](multiple_simple_compression.c) :
24 - [Streaming compression](streaming_compression.c) :
28 - [Multiple Streaming compression](multiple_streaming_compression.c) :
35 Compatible with both simple and streaming compression.
39 - [Dictionary compression](dictionary_compression.c) :
H A DMakefile71 @echo -- Simple compression tests
78 @echo -- Streaming compression tests
89 @echo -- Dictionary compression tests
/f-stack/freebsd/contrib/openzfs/tests/zfs-tests/tests/functional/cli_root/zfs_create/
H A Dzfs_create_verbose.ksh144 expect=([compression]=on)
145 dry_create_parseable expect -o compression=on "$TESTPOOL/$TESTFS1"
148 expect=([compression]=on)
149 dry_create_parseable expect -p -o compression=on "$TESTPOOL/$TESTFS1"
150 expect=([compression]=on)
151 dry_create_parseable expect -p -o compression=on "$TESTPOOL/$TESTFS1/$TESTVOL"
/f-stack/freebsd/contrib/zstd/
H A DCHANGELOG7 perf: faster dictionary compression at medium compression levels, by @felixhandte
134 perf: Faster compression speed in high compression mode for repetitive data by @terrelln (#1635)
195 perf: slightly better compression ratio at high compression modes
262 api : ZSTDMT can accept new compression parameters during compression
315 new : contrib/adaptive-compression, I/O driven compression strength, by Paul Cruz (@paulcruz74)
472 New : compression format specification
541 fix : fast compression mode on Windows
583 Small compression ratio improvement
589 Small compression ratio improvement
592 HC mode : compression levels 2-26
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H A DREADME.md3 __Zstandard__, or `zstd` as short version, is a fast lossless compression algorithm,
4 targeting real-time compression scenarios at zlib-level and better compression ratios.
33 For reference, several fast compression algorithms were tested and compared
38 on the [Silesia compression corpus].
62 The negative compression levels, specified with `--fast=#`,
64 compression ratio compared to level 1, as seen in the table above.
66 Zstd can also offer stronger compression ratios at the cost of compression speed.
76 on the [Silesia compression corpus].
86 ## The case for Small Data compression
104 These compression gains are achieved while simultaneously providing _faster_ compression and decomp…
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/f-stack/dpdk/doc/guides/prog_guide/
H A Dcompressdev.rst7 The compression framework provides a generic set of APIs to perform compression services
145 DPDK compression supports two types of compression methodologies:
148 to another compression operation.
150 - Stateful, data in each compression operation is compressed with reference to previous compression
183 compression operations from a given compression operation mempool.
274 before compression and after decompression.
295 (required only on compression side),
332 * pseudocode for stateless compression
378 /* prepare ops for compression operations */
475 * pseudocode for stateful compression
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/f-stack/freebsd/contrib/openzfs/tests/zfs-tests/tests/functional/rootpool/
H A Drootpool_007_pos.ksh49 log_must zfs set compression=$orig_compress $rootfs
60 typeset orig_compress=$(get_prop compression $rootfs)
67 log_must zfs set compression=${gtype[i]} $rootfs
/f-stack/freebsd/contrib/zstd/zlibWrapper/
H A DREADME.md34 #### Enabling zstd compression within your project
37 Your project should work as before with zlib. There are two options to enable zstd compression:
86 #### Improving speed of streaming compression
88 During streaming compression the compressor never knows how big is data to compress.
89 …compression can be improved by providing size of source data to the compressor. By default streami…
90 …dgedSrcSize()` function that allows to change a pledged source size for a given compression stream.
91 The function will change zstd compression parameters what may improve compression speed and/or rati…
98 The ordinary zlib compression of two files/streams allocates two contexts:
102 The speed of compression can be improved with reusing a single context with following steps:
108 …rence we made experiments using `zwrapbench -ri6b6` with zstd and zlib compression (both at level …
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/f-stack/freebsd/contrib/openzfs/tests/zfs-tests/tests/functional/pool_checkpoint/
H A Dpool_checkpoint.kshlib203 log_must zfs create -o compression=lz4 -o recordsize=8k $FS0
204 log_must zfs create -o compression=lz4 -o recordsize=8k $FS1
212 log_must zfs create -o compression=lz4 -o recordsize=8k $NESTEDFS0
213 log_must zfs create -o compression=lz4 -o recordsize=8k $NESTEDFS1
268 log_must zfs create -o compression=lz4 -o recordsize=8k $FS2
277 log_must zfs create -o compression=lz4 -o recordsize=8k $NESTEDFS2
317 log_must zfs create -o compression=lz4 -o recordsize=8k $NESTEDFS2
/f-stack/freebsd/contrib/openzfs/tests/zfs-tests/tests/functional/compression/
H A Dcompress_002_pos.ksh33 . $STF_SUITE/tests/functional/compression/compress.cfg
54 log_must zfs set compression=off $TESTPOOL/$TESTCTR
61 log_must zfs set compression=on $TESTPOOL/$TESTCTR
H A Dcompress_001_pos.ksh30 . $STF_SUITE/tests/functional/compression/compress.cfg
49 log_must zfs set compression=off $TESTPOOL/$TESTFS
56 log_must zfs set compression=on $TESTPOOL/$TESTFS
/f-stack/freebsd/contrib/xz-embedded/linux/Documentation/
H A Dxz.txt2 XZ data compression in Linux
7 XZ is a general purpose data compression format with high compression
8 ratio and relatively fast decompression. The primary compression
10 compression ratio even further. E.g. Branch/Call/Jump (BCJ) filters
11 improve compression ratio of executable data.
20 For userspace, XZ Utils provide a zlib-like compression library
43 from XZ Utils. The wrapper sets compression options to values suitable
54 Notes on compression options
84 use a big dictionary: for maximum compression, the dictionary should
/f-stack/freebsd/contrib/openzfs/tests/zfs-tests/tests/functional/delegate/
H A Dzfs_allow_012_neg.ksh60 recordsize mountpoint checksum compression canmount atime \
66 recordsize mountpoint checksum compression canmount atime \
72 recordsize mountpoint checksum compression canmount atime \
H A Dzfs_allow_010_pos.ksh76 compression true true \
112 compression true true \
144 compression true true \
/f-stack/dpdk/doc/guides/tools/
H A Dcomp_perf.rst10 one type of compression PMD can be measured during single application
13 which are passed to compress device with compression operations.
18 for compression and decompression).
21 dequeue_burst, for both compression and decompression. An optional delay can be
85 …``--operation [comp/decomp/comp_and_decomp]``: perform test on compression, decompression or both …
89 …``--compress-level N``: compression level, which could be a single value, list or range (default: …
91 ``--window-sz N``: base two log value of compression window size (default: max supported by PMD)
/f-stack/freebsd/contrib/zstd/lib/
H A Dlibzstd.pc.in1 # ZSTD - standard compression algorithm
11 Description: fast lossless compression algorithm library
/f-stack/freebsd/contrib/openzfs/tests/zfs-tests/tests/functional/bootfs/
H A Dbootfs_008_pos.ksh77 log_must zfs set compression=${gtype[i]} $COMP_FS
79 log_must zfs set compression=off $COMP_FS
/f-stack/freebsd/contrib/openzfs/tests/zfs-tests/tests/functional/grow/
H A Dgrow_pool_001_pos.ksh64 log_must zfs set compression=off $TESTPOOL/$TESTFS
86 log_must zfs inherit compression $TESTPOOL/$TESTFS
/f-stack/freebsd/contrib/openzfs/tests/zfs-tests/tests/functional/events/
H A Dzed_rc_filter.ksh83 log_must zfs set compression=off $TESTPOOL/$TESTFS
90 log_must zfs set compression=off $TESTPOOL/$TESTFS

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