- The “master” branch is considered stable, at all times.
- The “dev” branch is the one where all contributions must be merged before being promoted to master.
- If you plan to propose a patch, please commit into the “dev” branch, or its own feature branch. Direct commit to “master” are not permitted.
The benchmark uses lzbench, from @inikep compiled with GCC v8.2.0 on Linux 64-bits (Ubuntu 4.18.0-17). The reference system uses a Core i7-9700K CPU @ 4.9GHz (w/ turbo boost). Benchmark evaluates the compression of reference Silesia Corpus in single-thread mode.
|memcpy||1.000||13700 MB/s||13700 MB/s|
|LZ4 default (v1.9.0)||2.101||780 MB/s||4970 MB/s|
|LZO 2.09||2.108||670 MB/s||860 MB/s|
|QuickLZ 1.5.0||2.238||575 MB/s||780 MB/s|
|Snappy 1.1.4||2.091||565 MB/s||1950 MB/s|
|Zstandard 1.4.0 -1||2.883||515 MB/s||1380 MB/s|
|LZF v3.6||2.073||415 MB/s||910 MB/s|
|zlib deflate 1.2.11 -1||2.730||100 MB/s||415 MB/s|
|LZ4 HC -9 (v1.9.0)||2.721||41 MB/s||4900 MB/s|
|zlib deflate 1.2.11 -6||3.099||36 MB/s||445 MB/s|
LZ4 is also compatible and optimized for x32 mode, for which it provides additional speed performance.
make make install # this command may require root permissions
Makefile supports standard Makefile conventions, including staged installs, redirection, or command redefinition. It is compatible with parallel builds (
The raw LZ4 block compression format is detailed within lz4_Block_format.
Arbitrarily long files or data streams are compressed using multiple blocks, for streaming requirements. These blocks are organized into a frame, defined into lz4_Frame_format. Interoperable versions of LZ4 must also respect the frame format.
Beyond the C reference source, many contributors have created versions of lz4 in multiple languages (Java, C#, Python, Perl, Ruby, etc.). A list of known source ports is maintained on the LZ4 Homepage.