On 2017.05.15 at 14:02 +0000, Joseph Myers wrote: > The xz manpage warns against blindly using -9 (for which --best is a > deprecated alias) because of the implications for memory requirements for > decompressing. If there's a reason it's considered appropriate here, I > think it needs an explanatory comment.
I think it is unacceptable, because it would increase memory usage when decompressing over 20x compared to bz2 (and over 100x while compressing). The default -6 should be good enough (3x more memory when decompressing). -- Markus
