zpaq is a journaling archiver optimized for user-level incremental backup of directory trees in MacOS/X. It supports AES-256 encryption, 5 multi-threaded compression levels, and content-aware file fragment level deduplication. For backups it adds only files whose date has changed, and keeps both old and new versions. You can roll back the archive date to restore from old versions of the archive. The default compression level is faster than zip usually with better compression. zpaq uses a self-describing compressed format to allow for future improvements without breaking compatibility with older versions of the program. Contents:
File Ver. Description
----------- ---- -----------
zpaq.cpp 7.15 zpaq source code.
zpaq.pod 7.12 zpaq man page in pod2man format.
libzpaq.h 7.12 libzpaq API documentation and header.
libzpaq.cpp 7.15 libzpaq API source code.
Makefile to compile with make {install|check|clean}.
COPYING Unlicense.
Original versions of this software can be found at http://mattmahoney.net/dc/zpaq.html
Code from divsufsort.c is embedded in libzpaq.cpp. divsufsort.c is (C) 2003-2008 Yuta Mori, MIT license (see source code). It is also available from libdivsufsort-lite 2.0 from http://code.google.com/p/libdivsufsort/ All remaining code is public domain. See COPYING.
zpaq is a command line program. For a brief description of the commands, type "zpaq" with no arguments. See zpaq.pod for details.
You can use "make" to compile for Mac OS/X or compile like this:
g++ -O3 -march=apple-m1 zpaq.cpp libzpaq.cpp -o zpaq
To generate a man page in Linux or Cygwin:
pod2man zpaq.pod > zpaq.man
make install
Call with...
- xz :
xz --extreme --threads=12 --keep [file] - zpaq (homebrew) :
/opt/homebrew/Cellar/zpaq/7.15_1/bin/zpaq a [file].zpaq [file] -method 9(12 threads on my test system) - zpaq (fast) :
./zpaq a [file].zpaq [file] -method 9(self build, ASM specific) - Infozip 3.0 :
zip -9 [file].zip [file](OS included) - zstd :
zstd --ultra -22 --long -T12 [file] -o [file].zstd - 7zip :
7zz a -mmt12 -mx9 -slp [file].7z [file] - brotli :
brotli -o [file].br -q 11 -w 24 [file] - Apple gzip 400 :
gzip --best --keep [file](OS included) - zopfli :
zopfli --i100 [file] - bzip2 :
bzip2 -zk9 [enwik9] - pigz (gzip) :
pigz --best --keep [file](8 threads per default) - pigz (zopfli) :
pigz -11 -iterations 100 --keep [file](8 threads per default)
get results like ...
compressor file time size performance
-------------------------------------------------------------------------------------------------
none enwik9 0 s 1.000.000.000 byte (100,00%) all
pigz (gzip)** enwik9 5,21 s 322.914.671 byte ( 32,29%) 129.958.796 byte/s
gzip enwik9 30,66 s 322.789.249 byte ( 32,28%) 22.087.760 byte/s
zip enwik9 30,74 s 322.592.132 byte ( 32,26%) 22.036.690 byte/s
bzip2 enwik9 48,87 s 253.977.891 byte ( 25,40%) 15.265.441 byte/s
xz enwik9 55,36 s 232.378.008 byte ( 23,24%) 13.866.004 byte/s
7zip enwik9 143,90 s 214.790.773 byte ( 21,48%) 5.456.631 byte/s
zpaq (fast) enwik9 298,79 s 168.590.741 byte ( 16,86%) 2.782.587 byte/s
zstd enwik9 313,13 s 214.871.235 byte ( 21,49%) 2.507.337 byte/s
zpaq (homebrew) enwik9 420,97 s 168.590.741 byte ( 16,86%) 1.974.984 byte/s
pigz (zopfli)* enwik9 986,69 s 309.510.749 byte ( 30,95%) 699.803 byte/s
brotli enwik9 1.418,68 s 223.348.686 byte ( 22,34%) 547.446 byte/s
zopfli enwik9 6.660,01 s 309.453.089 byte ( 30,95%) 103.685 byte/s
* in result of also time 800,07 s is reachable the real performance is 863.036 byte/s
** in result of also time 3,40 s is reachable the real performance is 199.142.743 byte/s
In result of specific target Apple ARM64 (M1/M2) removed some unused code.
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Language files blank comment code
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C++ 2 698 816 7487
C/C++ Header 1 247 772 491
Markdown 1 27 0 82
make 1 8 0 26
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SUM: 5 980 1588 8086
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** EOF **