Pages are compressed using the bundled zlib compression algorithm. This is the default value in MariaDB 10.2.4 and later, and MariaDB 10.1.22 and later. lz4: Pages are compressed using the lz4 compression algorithm. lzo: Pages are compressed using the lzo compression algorithm. lzma: Pages are compressed using the lzma compression algorithm. bzip2

May 08, 2018 · There used to be a third reason not to use LZW: the algorithm was protected by patent. But that patent expired in 2003, so it’s no longer an issue for software developers to use LZW compression. In practical use, I nearly always use compression on my TIFF files, and it’s exceedingly rare to run into a problem. LZO or other algorithms with such tricks (e.g., by using a tiny dictionary of frequently occurring patterns). However, since the focus of this paper is not compression algorithms per se, we do not explore this direction here. TablesIandIIshow compression ratio and compression rate for several workloads using straight LZO-1X algorithm. After twenty years, a vulnerability in Lempel-Ziv-Oberhumer (LZO), an extremely efficient compression algorithm, has finally been patched. The flaw, a subtle integer overflow, existed for as long The LZO algorithm was created in 1994 by Markus Oberhumer, whose core open source implementation has been rewritten by numerous companies. LZO has been used for compression and decompression in various software applications, including OpenVPN , MPlayer2, Libav, FFmpeg, the Linux kernel, Android, iOS and even in the embedded systems that power LZO encoding provides a very high compression ratio with good performance. LZO encoding works especially well for CHAR and VARCHAR columns that store very long character strings, especially free form text, such as product descriptions, user comments, or JSON strings. Columns that are defined as CHAR or VARCHAR data types are assigned LZO compression. The following table identifies the supported compression encodings and the data types that support the encoding. Algorithm Compression Ratio IO performance increase Snappy 40% 25% LZF 40% 21% LZO 41% 5% ZLIB 48% -16% I am suspicious about something in LZO scores since I was expecting much better performance. But it doesn’t matter because of our inability to redistribute it. Snappy-java with its Apache license is a clear winner. It is way easy to use too.

allows the user to adjust the balance between compression ratio and compression speed, without affecting the speed of decompression; LZO supports overlapping compression and in-place decompression. As a block compression algorithm, it compresses and decompresses blocks of data. Block size must be the same for compression and decompression.

Apr 29, 2013 · Technical: Hadoop – HBase – Compression – lzo Introduction Unfortunately, HBase cannot ship with LZO because of the licensing issues; HBase is Apache-licensed, LZO is GPL. Therefo… Performance and compression ratio. This algorithm is more than 10 times faster than standard zip compression , almost independently of a compression level used (1-9 and even 0 – no compression). The speed is the same as LZO , the worlds fastest compression algorithm. Text is usually compressed to 60% of its original size. Jun 27, 2014 · Lempel-Ziv-Oberhumer (LZO) was developed in 1994 by Markus Oberhumer and currently it is one of the most popular and widespread compression algorithm used in the Linux kernel , some Samsung Android mobile devices, other embedded devices and several open-source libraries including OpenVPN, MPlayer2, Libav, FFmpeg. It appears to be LZO, which I think is the default algorithm for BTRFS.. Running the following on a new test share (a subvolume) reveals LZO on a current DS1515+: adminuser@ds1515plus:/# btrfs property get /volume2/Test ro=false compression=lzo

The lzo dd_rescue plugin (subsequently referred to as just ddr_lzo which reflects the variable parts of the filename libddr_lzo.so) choses compression or decompression mode automatically if one of the input/output files has an [lt]zo suffix; otherwise you may specify compr[ess] or decom[press] parameters on the command line.

Jun 27, 2014 · Lempel-Ziv-Oberhumer (LZO) was developed in 1994 by Markus Oberhumer and currently it is one of the most popular and widespread compression algorithm used in the Linux kernel , some Samsung Android mobile devices, other embedded devices and several open-source libraries including OpenVPN, MPlayer2, Libav, FFmpeg. It appears to be LZO, which I think is the default algorithm for BTRFS.. Running the following on a new test share (a subvolume) reveals LZO on a current DS1515+: adminuser@ds1515plus:/# btrfs property get /volume2/Test ro=false compression=lzo When called, indicates that compression should end with the current contents of the input buffer. boolean: finished() Returns true if the end of the compressed data output stream has been reached. static boolean: isNativeLzoLoaded() Check if lzo compressors are loaded and initialized. boolean: needsInput() Returns true if the input data buffer