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/openbmc/qemu/docs/
H A Dmulti-thread-compression.txt1 Use multiple thread (de)compression in live migration
21 be decompressed. Using compression in live migration can help
27 The process of compression will consume additional CPU cycles, and the
30 the total migration time. If the process of the compression is quick
32 thread compression can be used to accelerate the compression process.
35 compression, if the source and destination CPU have equal speed,
36 keeping the compression thread count 4 times the decompression
39 Compression level can be used to control the compression speed and the
40 compression ratio. High compression ratio will take more time, level 0
41 stands for no compression, level 1 stands for the best compression
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/openbmc/linux/net/6lowpan/
H A DKconfig22 Support for next header and generic header compression defined in
31 6LoWPAN IPv6 Destination Options Header compression according to
38 6LoWPAN IPv6 Fragment Header compression according to RFC6282.
44 6LoWPAN IPv6 Hop-by-Hop Options Header compression according to
51 6LoWPAN IPv6 Header compression according to RFC6282.
57 6LoWPAN IPv6 Mobility Header compression according to RFC6282.
63 6LoWPAN IPv6 Routing Header compression according to RFC6282.
69 6LoWPAN IPv6 UDP Header compression according to RFC6282.
74 6LoWPAN IPv6 Hop-by-Hop option generic header compression according
80 6LoWPAN IPv6 UDP generic header compression according to RFC7400.
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/openbmc/linux/drivers/media/usb/pwc/
H A Dpwc-ctrl.c142 int frames, int *compression, int send_to_cam) in set_video_mode_Nala() argument
210 *compression = 3; in set_video_mode_Nala()
217 int frames, int *compression, int send_to_cam) in set_video_mode_Timon() argument
222 if (size >= PSZ_MAX || *compression < 0 || *compression > 3) in set_video_mode_Timon()
234 pChoose = &Timon_table[size][fps][*compression]; in set_video_mode_Timon()
237 (*compression)++; in set_video_mode_Timon()
238 } while (*compression <= 3); in set_video_mode_Timon()
268 int frames, int *compression, int send_to_cam) in set_video_mode_Kiara() argument
273 if (size >= PSZ_MAX || *compression < 0 || *compression > 3) in set_video_mode_Kiara()
285 pChoose = &Kiara_table[size][fps][*compression]; in set_video_mode_Kiara()
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/openbmc/u-boot/doc/uImage.FIT/
H A Dmulti.its18 compression = "gzip";
35 compression = "gzip";
49 compression = "gzip";
63 compression = "gzip";
77 compression = "gzip";
90 compression = "none";
101 compression = "none";
H A Dmulti_spl.its27 compression = "none";
35 compression = "none";
44 compression = "none";
51 compression = "none";
59 compression = "none";
67 compression = "none";
75 compression = "none";
H A Dmulti-with-loadables.its19 compression = "none";
32 compression = "none";
44 compression = "none";
57 compression = "none";
H A Dupdate3.its15 compression = "none";
25 compression = "none";
36 compression = "none";
/openbmc/linux/arch/powerpc/boot/
H A Dwrapper47 compression=.gz
145 compression=.gz
153 compression=".$1"
156 if [ $compression = ".none" ]; then
157 compression=
167 compression=
300 compression=
331 compression=
402 if [ -z "$cacheit" -o ! -f "$vmz$compression" -o "$vmz$compression" -ot "$kernel" ]; then
404 case $compression in
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/openbmc/linux/fs/squashfs/
H A DKconfig8 filesystem for Linux. It uses zlib, lzo or xz compression to
91 If in doubt, select "Single threaded compression"
94 bool "Single threaded compression"
158 ZLIB compression is the standard compression used by Squashfs
159 file systems. It offers a good trade-off between compression
171 compressed with LZ4 compression. LZ4 compression is mainly
175 LZ4 is not the standard compression used in Squashfs and so most
186 compressed with LZO compression. LZO compression is mainly
190 LZO is not the standard compression used in Squashfs and so most
201 compressed with XZ compression. XZ gives better compression than
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/openbmc/openbmc/poky/meta/recipes-support/lzop/
H A Dlzop_1.04.bb2 DESCRIPTION = "lzop is a compression utility which is designed to be a companion to gzip. \n\
3 It is based on the LZO data compression library and its main advantages over \n\
4 gzip are much higher compression and decompression speed at the cost of some \n\
5 compression ratio. The lzop compression utility was designed with the goals \n\
/openbmc/linux/fs/jffs2/
H A DKconfig9 levelling, compression and support for hard links. You cannot use
101 bool "Advanced compression options for JFFS2"
106 compression modules, if any, are enabled in JFFS2. Removing
114 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
121 lossless data-compression library for use on virtually any computer
128 bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
134 minilzo-based compression. Generally works better than Zlib.
140 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
147 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
154 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
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/openbmc/openbmc/meta-openembedded/meta-oe/recipes-support/xdelta/
H A Dxdelta3_3.1.0.bb1 SUMMARY = "Xdelta is a tool for differential compression"
2 DESCRIPTION = "Open-source binary diff, differential compression tools, \
3 VCDIFF (RFC 3284) delta compression."
16 # Optional secondary compression
/openbmc/linux/Documentation/admin-guide/blockdev/
H A Dzram.rst10 in memory itself. These disks allow very fast I/O and compression provides
74 2) Set max number of compression streams
78 allocate multiple compression streams - one per online CPU - thus
79 allowing several concurrent compression operations. The number of
80 allocated compression streams goes down when some of the CPUs
81 become offline. There is no single-compression-stream mode anymore,
88 3) Select compression algorithm
92 currently selected (shown in square brackets) compression algorithms,
93 or change the selected compression algorithm (once the device is initialised
94 there is no way to change compression algorithm).
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/openbmc/u-boot/tools/
H A Dk3_fit_atf.sh37 compression = "none";
47 compression = "none";
58 compression = "none";
72 compression = "none";
/openbmc/linux/Documentation/userspace-api/media/drivers/
H A Daspeed-video.rst9 video compressions with a wide range of video quality and compression ratio
14 * JPEG JFIF standard mode: for single frame and management compression
15 * ASPEED proprietary mode: for multi-frame and differential compression.
16 Support 2-pass (high quality) video compression scheme (Patent pending by
17 ASPEED). Provide visually lossless video compression quality or to reduce
48 that can be used to decide compression quality if High quality mode enabled
/openbmc/linux/drivers/crypto/intel/qat/
H A DKconfig24 for accelerating crypto and compression workloads.
35 for accelerating crypto and compression workloads.
46 for accelerating crypto and compression workloads.
57 for accelerating crypto and compression workloads.
70 Virtual Function for accelerating crypto and compression workloads.
82 Virtual Function for accelerating crypto and compression workloads.
94 Virtual Function for accelerating crypto and compression workloads.
/openbmc/qemu/docs/devel/migration/
H A Dqpl-compression.rst5 provide compression and decompression features and it is based on deflate
6 compression algorithm (RFC 1951).
8 The ``QPL`` compression relies on Intel In-Memory Analytics Accelerator(``IAA``)
115 - 8 engines and 1 work queue are configured in group 0, so all compression jobs
163 The multifd migration with ``QPL`` compression method will use all work
204 4 - Enable ``QPL`` compression during migration
206 Set ``migrate_set_parameter multifd-compression qpl`` when migrating, the
207 ``QPL`` compression does not support configuring the compression level, it
208 only supports one compression level.
213 Although both ``QPL`` and ``ZLIB`` are based on the deflate compression
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H A Dfeatures.rst15 qpl-compression
16 uadk-compression
17 qatzip-compression
/openbmc/openbmc/poky/meta/recipes-extended/lzip/
H A Dlzlib_1.14.bb1 SUMMARY = "Data compression library providing in-memory LZMA compression and decompression function…
3 DESCRIPTION = "Lzlib is a data compression library providing in-memory LZMA compression and decompr…
/openbmc/u-boot/arch/arm/mach-imx/
H A Dmkimage_fit_atf.sh61 compression = "none";
69 compression = "none";
82 compression = "none";
97 compression = "none";
/openbmc/u-boot/board/theobroma-systems/puma_rk3399/
H A Dfit_spl_atf.its21 compression = "none";
30 compression = "none";
38 compression = "none";
45 compression = "none";
/openbmc/linux/usr/
H A DKconfig112 prompt "Built-in initramfs compression mode"
116 initramfs will be compressed. Several compression algorithms are
117 available, which differ in efficiency, compression and
125 High compression options are mostly useful for users who are
130 compression tool to compress the generated initram cpio file for
139 Use the old and well tested gzip compression algorithm. Gzip provides
140 a good balance between compression ratio and decompression speed and
141 has a reasonable compression speed. It is also more likely to be
149 It's compression ratio and speed is intermediate. Decompression speed
162 This algorithm's compression ratio is best but has a large dictionary
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/openbmc/qemu/ui/
H A Dvnc-enc-zlib.c79 err = deflateInit2(zstream, vs->tight->compression, Z_DEFLATED, in vnc_zlib_stop()
88 vs->zlib.level = vs->tight->compression; in vnc_zlib_stop()
92 if (vs->tight->compression != vs->zlib.level) { in vnc_zlib_stop()
93 if (deflateParams(zstream, vs->tight->compression, in vnc_zlib_stop()
97 vs->zlib.level = vs->tight->compression; in vnc_zlib_stop()
/openbmc/u-boot/lib/lzma/
H A Dlzma.txt5 and tools you need to develop applications that use LZMA compression.
7 LZMA is default and general compression method of 7z format
8 in 7-Zip compression program (www.7-zip.org). LZMA provides high
9 compression ratio and very fast decompression.
11 LZMA is an improved version of famous LZ77 compression algorithm.
12 It was improved in way of maximum increasing of compression ratio,
92 Compress - files related to compression/decompression
102 LzmaCon - lzma.exe: LZMA compression/decompression
117 Compress - files related to compression/decompression
118 LZ - files related to LZ (Lempel-Ziv) compression algorithm
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/openbmc/openbmc/poky/meta/recipes-extended/zstd/
H A Dzstd_1.5.6.bb1 SUMMARY = "Zstandard - Fast real-time compression algorithm"
2 DESCRIPTION = "Zstandard is a fast lossless compression algorithm, targeting \
3 real-time compression scenarios at zlib-level and better compression ratios. \

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