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/openbmc/qemu/ui/
H A Dvnc-enc-tight.h36 *-- The first byte of each Tight-encoded rectangle is a "compression control
39 * bit 0: if 1, then compression stream 0 should be reset;
40 * bit 1: if 1, then compression stream 1 should be reset;
41 * bit 2: if 1, then compression stream 2 should be reset;
42 * bit 3: if 1, then compression stream 3 should be reset;
43 * bits 7-4: if 1000 (0x08), then the compression type is "fill",
44 * if 1001 (0x09), then the compression type is "jpeg",
45 * if 1010 (0x0A), then the compression type is "png",
46 * if 0xxx, then the compression type is "basic",
49 * If the compression type is "basic", then bits 6..4 of the
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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/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,
54 methods.txt - Compression method IDs for .7z
92 Compress - files related to compression/decompression
102 LzmaCon - lzma.exe: LZMA compression/decompression
117 Compress - files related to compression/decompression
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/openbmc/u-boot/doc/uImage.FIT/
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.its18 compression = "gzip";
35 compression = "gzip";
49 compression = "gzip";
63 compression = "gzip";
77 compression = "gzip";
90 compression = "none";
101 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/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/qemu/docs/devel/migration/
H A Dqpl-compression.rst2 QPL Compression
5 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``)
16 QPL Compression Framework
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
193 How To Use QPL Compression In Migration
204 4 - Enable ``QPL`` compression during migration
206 Set ``migrate_set_parameter multifd-compression qpl`` when migrating, the
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H A Dfeatures.rst15 qpl-compression
16 uadk-compression
17 qatzip-compression
/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/qemu/tests/qemu-iotests/
H A D2874 # Test case for an image using zstd compression
56 if echo "$output" | grep -q "Parameter 'compression-type' does not accept value 'zstd'"; then
61 echo "=== Testing compression type incompatible bit setting for zlib ==="
64 _qcow2_dump_header --no-filter-compression | grep incompatible_features
67 echo "=== Testing compression type incompatible bit setting for zstd ==="
70 _qcow2_dump_header --no-filter-compression | grep incompatible_features
78 _qcow2_dump_header --no-filter-compression | grep incompatible_features
90 _qcow2_dump_header --no-filter-compression | grep incompatible_features
97 echo "=== Testing compression type values ==="
H A D06592 'compression-type': 'zlib' }
93 human_compare = [ 'compat: 0.10', 'compression type: zlib',
107 'compression-type': compression_type, 'extended-l2': False }
108 human_compare = [ 'compat: 1.1', f'compression type: {compression_type}',
117 'compression-type': 'zlib', 'extended-l2': False }
118 human_compare = [ 'compat: 1.1', 'compression type: zlib',
129 'compression-type': 'zlib', 'extended-l2': False }
145 'compression-type': compression_type, 'extended-l2': False }
H A D3144 # Test qemu-img rebase with compression
52 # support compression. We only check "-f raw" here.
62 # with compression (i.e. "qemu-img -c -b ''"). Check that the resulting image
66 echo "=== Testing rebase with compression onto no backing file ==="
86 echo "=== Testing rebase with compression with raw backing file ==="
105 # thirds of them, respectively (with compression). Rebase img onto base,
136 # overlay onto no backing file with compression. Check that data is still
H A D082.out20 compression type: COMPRESSION_TYPE
34 compression type: COMPRESSION_TYPE
55 compression_type=<str> - Compression method used for image cluster compression
81 compression_type=<str> - Compression method used for image cluster compression
107 compression_type=<str> - Compression method used for image cluster compression
133 compression_type=<str> - Compression method used for image cluster compression
159 compression_type=<str> - Compression method used for image cluster compression
185 compression_type=<str> - Compression method used for image cluster compression
211 compression_type=<str> - Compression method used for image cluster compression
237 compression_type=<str> - Compression method used for image cluster compression
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/openbmc/openbmc/poky/meta/recipes-extended/lzip/
H A Dlzlib_1.15.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/openbmc/poky/meta/recipes-extended/zstd/
H A Dzstd_1.5.7.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. \
/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/bmcweb/redfish-core/include/generated/enums/
H A Dacceleration_function.hpp13 Compression, enumerator
25 {AccelerationFunctionType::Compression, "Compression"},
/openbmc/qemu/tests/migration-stress/guestperf/
H A Dcomparison.py100 # Looking at effect of multi-thread compression with
112 # Looking at effect of xbzrle compression with varying
163 # different compression algorithms
164 Comparison("compr-multifd-compression", scenarios = [
165 Scenario("compr-multifd-compression-zlib",
167 Scenario("compr-multifd-compression-zstd",
169 Scenario("compr-multifd-compression-qpl",
171 Scenario("compr-multifd-compression-uadk",
/openbmc/openbmc/meta-openembedded/meta-oe/recipes-extended/snappy/
H A Dsnappy_1.1.10.bb5 SUMMARY = "A compression/decompression library"
6 DESCRIPTION = "Snappy is a fast data compression and decompression library \
8 compression ratio."
/openbmc/openbmc/meta-openembedded/meta-oe/recipes-extended/brotli/
H A Dbrotli_1.1.0.bb1 SUMMARY = "Lossless compression library and tool"
2 DESCRIPTION = "Brotli is a generic-purpose lossless compression algorithm \
3 that it is similar in speed to deflate but offers more dense compression."
/openbmc/u-boot/lib/
H A DKconfig297 menu "Compression Support"
305 trades lower compression ratios for much faster decompression.
317 a dictionary compression algorithm that provides a high compression
324 This enables support for LZO compression algorithm.r
330 is a lossless data compression algorithm that is focused on
331 fast compression and decompression speed. It belongs to the LZ77
332 family of byte-oriented compression schemes.
337 This enables support for LZO compression algorithm in the SPL.
343 This enables support for GZIP compression altorithm for SPL boot.
348 This enables compression lib for SPL boot.
/openbmc/openbmc/meta-openembedded/meta-perl/recipes-perl/libcompress/
H A Dlibcompress-raw-bzip2-perl_2.213.bb1 SUMMARY = "Low-Level Interface to bzip2 compression library"
3 compression/uncompression functions from the bzip2 compression library."
/openbmc/u-boot/tools/
H A Dk3_fit_atf.sh37 compression = "none";
47 compression = "none";
58 compression = "none";
72 compression = "none";

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