I’ve searched for it and xz also doesn’t use multithreading by default, you can change the program tar uses to compress by passing the -I option. For xz using all possible CPU threads:
tar -cv -I 'xz -6 -T0' -f archive.tar.xz [list of directories]
The number indicates the compression ratio, the higher the number, the more compressed the archive will be but it will cost more in terms of memory and processing time
I’ve searched for it and xz also doesn’t use multithreading by default, you can change the program tar uses to compress by passing the
-Ioption. For xz using all possible CPU threads:tar -cv -I 'xz -6 -T0' -f archive.tar.xz [list of directories]The number indicates the compression ratio, the higher the number, the more compressed the archive will be but it will cost more in terms of memory and processing time
Thanks for answering your own question, this is useful information.