mirror of
https://github.com/Ponce/slackbuilds
synced 2024-11-18 22:06:04 +01:00
23 lines
1.2 KiB
Text
23 lines
1.2 KiB
Text
lrzip (Long Range ZIP or Lzma RZIP) is a file compression program designed
|
|
to do particularly well on very large files containing long distance redundancy.
|
|
|
|
lrztar is a wrapper for lrzip to simplify compression and decompression
|
|
of directories. lrzip uses an extended version of rzip which does a first pass
|
|
long distance redundancy reduction. The lrzip modifications make it scale
|
|
according to memory size. The data is then either:
|
|
1. Compressed by lzma (default), zpaq, lzo, gzip or bzip2.
|
|
2. Left uncompressed and rzip prepared.
|
|
|
|
The major disadvantages are:
|
|
1. The main lrzip application only works on single files so it requires the
|
|
lrztar wrapper to fake a complete archiver.
|
|
2. It requires a lot of memory to get the best performance out of, and is not
|
|
really usable (for compression) with less than 256MB. Decompression requires
|
|
less ram and works on smaller ram machines.
|
|
3. It works on stdin/out but in a very inefficient manner generating temporary
|
|
files on disk so this method of using lrzip is not recommended.
|
|
4. Files compressed on a 64 bit OS with a compression window greater than 20
|
|
(2 GB) may not decompress on a 32 bit OS.
|
|
|
|
See the file README.benchmarks for performance examples and what kind of data
|
|
lrzip is very good with.
|