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Diffstat (limited to 'archivers/rzip/pkg-descr')
| -rw-r--r-- | archivers/rzip/pkg-descr | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/archivers/rzip/pkg-descr b/archivers/rzip/pkg-descr new file mode 100644 index 000000000000..34e6001139cc --- /dev/null +++ b/archivers/rzip/pkg-descr @@ -0,0 +1,16 @@ +rzip is a compression program, similar in functionality to gzip or bzip2, but +able to take advantage from long distance redundancies in files, which can +sometimes allow rzip to produce much better compression ratios than other +programs. + +The principal advantage of rzip is that it has an effective history buffer of +900 Mbyte. This means it can find matching pieces of the input file over huge +distances compared to other commonly used compression programs. The gzip +program by comparison uses a history buffer of 32 kbyte and bzip2 uses a +history buffer of 900 kbyte. The second advantage of rzip over bzip2 is that it +is usually faster. This may seem surprising at first given that rzip uses the +bzip2 library as a backend (for handling the short-range compression), but it +makes sense when you realise that rzip has usually reduced the data a fair bit +before handing it to bzip2, so bzip2 has to do less work. + +WWW: http://rzip.samba.org/ |