On Tue, Nov 28, 2017 at 01:54:57PM +0100, Marius Bakke wrote:
> Gah.  I used "xz --threads=0" initially and didn't expect it to change
> the outcome.

Since threads=0 means "compress with as many CPU cores as are
available", I'd guess the output of this depends on the number of
threads used.

from man(1):
"Setting threads to a special value 0 makes xz use as many threads as
there are CPU cores on the system."