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/openbmc/qemu/docs/
H A Dmulti-thread-compression.txt1 Use multiple thread (de)compression in live migration
32 thread compression can be used to accelerate the compression process.
40 compression ratio. High compression ratio will take more time, level 0
41 stands for no compression, level 1 stands for the best compression
76 | | compression level: 1
96 | | compression level: 1
112 to support the multiple thread compression migration:
116 2. Activate compression on the source:
119 3. Set the compression thread count on source:
122 4. Set the compression level on the source:
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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.
80 6LoWPAN IPv6 UDP generic header compression according to RFC7400.
96 6LoWPAN IPv6 fragmentation option generic header compression
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/openbmc/linux/drivers/media/usb/pwc/
H A Dpwc-ctrl.c210 *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()
237 (*compression)++; in set_video_mode_Timon()
238 } while (*compression <= 3); in set_video_mode_Timon()
273 if (size >= PSZ_MAX || *compression < 0 || *compression > 3) in set_video_mode_Kiara()
288 (*compression)++; in set_video_mode_Kiara()
289 } while (*compression <= 3); in set_video_mode_Kiara()
331 compression, send_to_cam); in pwc_set_video_mode()
334 compression, send_to_cam); in pwc_set_video_mode()
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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"
157 compression=
167 compression=
300 compression=
331 compression=
404 case $compression in
419 compression=
425 mv -f "$vmz.$$$compression" "$vmz$compression"
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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/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/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
186 compressed with LZO compression. LZO compression is mainly
201 compressed with XZ compression. XZ gives better compression than
202 the default zlib compression, at the expense of greater CPU and
216 compressed with ZSTD compression. ZSTD gives better compression than
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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/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
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
158 You can set here the default compression mode of JFFS2 from
159 the available compression modes. Don't touch if unsure.
162 bool "no compression"
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/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/Documentation/admin-guide/blockdev/
H A Dzram.rst74 2) Set max number of compression streams
80 allocated compression streams goes down when some of the CPUs
88 3) Select compression algorithm
94 there is no way to change compression algorithm).
98 #show supported compression algorithms
102 #select lzo compression algorithm
113 custom crypto compression modules (implementing S/W or H/W compression).
414 compression algorithm can provide better compression ratio at a price of
415 (potentially) slower compression/decompression speeds. Alternative compression
471 During re-compression for every page, that matches re-compression criteria,
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/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/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/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/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/openbmc/poky/meta/recipes-extended/zstd/
H A Dzstd_1.5.5.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/sunxi/
H A Dmksunxi_fit_atf.sh35 compression = "none";
43 compression = "none";
57 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
190 decompression speed is the second fastest and it's compression speed
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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.
92 Compress - files related to compression/decompression
117 Compress - files related to compression/decompression
119 LZMA - LZMA compression/decompression
127 LZMA - LZMA compression/decompression
187 -a{N}: set compression mode 0 = fast, 1 = normal
198 and slower compression process.
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/openbmc/openbmc/meta-openembedded/meta-perl/recipes-perl/libcompress/
H A Dlibcompress-raw-bzip2-perl_2.206.bb1 SUMMARY = "Low-Level Interface to bzip2 compression library"
3 compression/uncompression functions from the bzip2 compression library."

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