b738c01a80
able to take advantage from long distance redundancies in files, which can sometimes allow rzip to produce much better compression ratios than other programs. WWW: http://rzip.samba.org/
16 lines
942 B
Text
16 lines
942 B
Text
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/
|