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17 lines
943 B
Plaintext
17 lines
943 B
Plaintext
rzip is a compression program, similar in functionality to gzip or bzip2, but
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able to take advantage from long distance redundancies in files, which can
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sometimes allow rzip to produce much better compression ratios than other
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programs.
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The principal advantage of rzip is that it has an effective history buffer of
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900 Mbyte. This means it can find matching pieces of the input file over huge
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distances compared to other commonly used compression programs. The gzip
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program by comparison uses a history buffer of 32 kbyte and bzip2 uses a
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history buffer of 900 kbyte. The second advantage of rzip over bzip2 is that it
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is usually faster. This may seem surprising at first given that rzip uses the
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bzip2 library as a backend (for handling the short-range compression), but it
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makes sense when you realise that rzip has usually reduced the data a fair bit
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before handing it to bzip2, so bzip2 has to do less work.
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WWW: https://rzip.samba.org/
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