LZ4
sqlite-zstd
LZ4 | sqlite-zstd | |
---|---|---|
21 | 9 | |
9,234 | 1,349 | |
1.1% | - | |
9.5 | 2.2 | |
3 days ago | 4 months ago | |
C | Rust | |
GNU General Public License v3.0 or later | GNU Lesser General Public License v3.0 only |
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LZ4
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Number sizes for LZ77 compression
LZ4 is a bit more complicated, but seems faster: https://github.com/lz4/lz4/blob/dev/doc/lz4_Block_format.md
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Rsyncing 20TB locally
According to these https://github.com/lz4/lz4 values you need around ten (10) quite modern cores in parallel to accomplish around 8GB/s.
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An Intro to Data Compression
The popular NoSQL database Cassandra utilizes a compression algorithm called LZ4 to reduce the footprint of data at rest. LZ4 is characterized by very fast compression speed at the cost of a higher compression ratio. This is a design choice that allows Cassandra to maintain high write throughput while also benefiting from compression in some capacity.
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Micron Unveils 24GB and 48GB DDR5 Memory Modules | AMD EXPO and Intel XMP 3.0 compatible
Yeah, sure, when you have monster core counts. on regular systems, not so much, here's from their own github page. it achieves, eh, 5GB/s on memory to memory transfers, i.e. best case scenario. so, uh, no? i'm not even sure it's any better than the CPU decompressor one Nvidia used.
- Cerbios Xbox Bios V2.2.0 BETA Released (1.0 - 1.6)
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zstd
> The downside of lz4 is that it can’t be configured to run at higher & slower compression ratios.
lz4 has some level of configurability? https://github.com/lz4/lz4/blob/v1.9.4/lib/lz4frame.h#L194
There's also LZ4_HC.
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Best archival/compression format for whole hard drives
Since nobody mentioned it, I'll add lz4 (https://github.com/lz4/lz4).
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I'm new to this
Get your bootloader unlocked via Download mode and then obtain your stock firmware, preferably for your current region https://samfw.com (Download mode: CARRIER_CODE). Get the boot image from AP with 7zip, unpack from LZ4 with https://github.com/lz4/lz4/releases (drag and drop), patch with Magisk https://github.com/topjohnwu/magisk/releases/latest, grab the new image, name it "boot.img" and pack it into a .tar with 7zip and flash to AP with odin https://odindownload.com
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An efficient image format for SDL
After some investigations and experiments, I found out that it was the PNG compression (well, decompression I should say) that took a while. So I've made some experiments using the LZ4 compression library, which is focused on decompression speed, and it turned out to be an excellent solution!
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how to root Samsung galaxy note 10 plus 5g(SM-N976B
Root with magisk: whether you use OneUI ≤3 or 4, patch the specific image needed for it (pre 4: boot, after 4: recovery) and flash it to the device. Boot it and enjoy root. https://github.com/lz4/lz4/releases can help extracting it from the AP tarball.
sqlite-zstd
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WAL Mode in LiteFS
Have you compared LZ4 to other compression algorithms, zstd for example? ( https://github.com/phiresky/sqlite-zstd )
Given that LiteFS operates at the filesystem layer via FUSE, have you considered it against designs that use built-in features native to some filesystems? For example, I've considered a similar system design based on a single ZFS primary node that streams ZFS snapshots to reader nodes. With some coordination service (e.g. consul) it could still allow for the whole node promotion process.
- zstd
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Compressed Sqlite database and indexing
There's library to compress sqlite databases with extensions like sqlite-zstd.
- Show HN: 通过透明压缩将SQLite数据库的大小减少到80%。 (Show HN: Reduce SQLite database size by up to 80% with transparent compression)
- Show HN: Reduce SQLite database size by up to 80% with transparent compression
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SQLite Archive Files
You can also try sqlite-zstd [1], which is an sqlite extension allows transparent compression of individual rows by automatically training dictionaries based on groups of data rows.
Disclaimer: I made it and it's not production ready
[1] https://github.com/phiresky/sqlite-zstd
What are some alternatives?
zstd - Zstandard - Fast real-time compression algorithm
libsqlfs - a library that implements a POSIX style filesystem on top of an SQLite database
Snappy - A fast compressor/decompressor
compress - Optimized Go Compression Packages
brotli - Brotli compression format
pocketbase-framework-litestr
LZMA - (Unofficial) Git mirror of LZMA SDK releases
cloudbeaver - Cloud Database Manager
ZLib - A massively spiffy yet delicately unobtrusive compression library.
compress-json - Store JSON data in space efficient manner
7-Zip-zstd - 7-Zip with support for Brotli, Fast-LZMA2, Lizard, LZ4, LZ5 and Zstandard
postlite - Postgres wire compatible SQLite proxy.