GZIP
GZip is a very fast compression format known especially on Posix systems, lightweight enough to be used as a real-time mechanism for compressing content served by Apache. The 32-bit compile comes from the GnuWin32 project, and the 64-bit compile comes from HardwareHacks. The version tested (1.2.4) is very old, but it was the only version available as a 64-bit compile.
gzip 1.2.4 (18 Aug 93) usage: gzip [-acdfhlLnNrtvV19] [-S suffix] [file ...] -a --ascii ascii text; convert end-of-lines using local conventions -c --stdout write on standard output, keep original files unchanged -d --decompress decompress -f --force force overwrite of output file and compress links -h --help give this help -l --list list compressed file contents -L --license display software license -n --no-name do not save or restore the original name and time stamp -N --name save or restore the original name and time stamp -q --quiet suppress all warnings -r --recursive operate recursively on directories -S .suf --suffix .suf use suffix .suf on compressed files -t --test test compressed file integrity -v --verbose verbose mode -V --version display version number -1 --fast compress faster -9 --best compress better file... files to (de)compress. If none given, use standard input.
| Command | 32-bit | 64-bit | Difference |
|---|---|---|---|
| Average | -16.298% | ||
gzip -1 |
39.421 | 28.064 | -28.810% |
gzip -5 |
65.177 | 56.222 | -13.740% |
gzip -9 |
96.377 | 90.262 | -6.345% |