I'm trying to compress a 100GB with a good ratio, so I decided to use xz. I don't need it to be very fast, but since I have an 8-threads CPU, I was wondering how to take advantage of them.
I found there is a parallel implementation of xz: pixz. I found too that xz has a multithread option -T. I'm experimenting with both of them but I can't see any difference in their behavior.
What's the difference between them? Why are there 2 parallel implementations for xz?
Edit: I found there is another one: pxz.