Software: GZIP vs. BZIP2 vs. XZ - performance

Input

For test i selected following files:

* DVD.iso
* fs.bin
* linux.tar
* random.bin
* zero.bin

for a in *
do
        for b in 1 6 9
        do
                cat ${a} | gzip  -${b} > ${a}.${b}.gz
                cat ${a} | bzip2 -${b} > ${a}.${b}.bz2
                cat ${a} | xz    -${b} > ${a}.${b}.xz
        done
done