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Since PPMZ uses a lot of memory/CPU its hard to evaluate it on the debian
source packages. Instead it has been evaluated on 29 randomly picked
(source) packages.
Size:
FILE: Tar PPMd PPMZ PPMonstr
libnet-ipnetmember-perl_1.00.orig.tar 30720 5029 5078
popularity-contest_1.3-1.1.tar 51200 9330 9421
liblogfile-rotate-perl_1.04.orig.tar 81920 10254 10120 9660
libroxen-popdrop_1.9.orig.tar 51200 10517 10698
galrey_0.5.4-3.tar 81920 16032 16409
xonix-jahu_1.1.orig 112640 23328 24059
slrnface_2.1.1.orig.tar 102400 23350 23989
chase_0.5.orig.tar 133120 27371 28137
ctklight_0.22.2.orig.tar 153600 30907 31846
libhtml-clean-perl_0.8.orig.tar 204800 37108 38223
lib3ds_1.2.0.orig.tar 788480 93063 97185
devmapper_0.96.07.orig.tar 768000 96455 96595
waili_19990723.orig.tar 665600 103438 107891
cweb_3.64.orig.tar 737280 137835 142537
dvipdfm_0.13.2c.orig.tar 921600 145656 152236
gnome-objc_1.0.40.orig.tar 1648640 166359 169168
hwdata_0.64.orig.tar 911360 168677 174532
axyftp_0.5.1.orig.tar 2529280 188027 183509 170732
m4_1.4.orig.tar 1239040 211226 220963
zsh30_3.0.8.orig.tar 2375680 437417 457820
chasen_2.2.9.orig.tar 1505280 475422 476336
manpages-fr_0.9.7.orig.tar 5560320 608556 636652
unzip_5.50.orig.tar 4751360 630058 650473
postfix-snap_1.1.11-20021115.orig.tar 6062080 676614 N/A
youbin_3.4.orig.tar 1310720 864727 846722 836893
lg-issue18_6.orig.tar 2877440 1318292 1297317 1287244
scalapack_1.7.orig.tar 31938560 1369437 N/A
torch_2.orig.tar.ppmz 4567040 1675610 1661365 1616614
isdnutils_3.2pre1.orig 15667200 4589378 N/A
PPMZ is indeed very good. It ain't easy to find a compressor that matches so
evenly with PPMd as PPMZ.
PPMd = PPMd -o16 -m220
PPMZ = ppmz -b
PPMonstr = PPMonster.exe -o16 -m220
N/A = PPMZ can't compress the file in reasonable time using reasonable amounts
of memory.
PPMonster is an unfree version of PPMd “with time consuming extras”, that has
been removed from the Debian source package to avoid main/non-free mixing
problems. Its available from: <ftp://ftp.elf.stuba.sk/pub/pc/pack>
PPMd: 24 wins vs 5 wins for PPMZ.
PPMonster: 29 wins vs 0 wins for PPMZ
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