The existing XZ Utils provide great compression in the .xz file format, but they have two significant problems: {

*} They are single-threaded, while most users now have multi-core computers. {
*} The .xz files they produce are just one big block of compressed data, rather than a collection of smaller blocks. This makes random access to the original data impossible. {

With} pixz, both these problems are solved.

WWW: https://github.com/vasi/pixz
