xz -9 file to compress

xz: file_to_compress: Cannot allocate memory

xz -8 file_to_compress 
Killed

xz -7 file_to_compress ~ 5% reduction

Default: xz -6

See also

• Data compression: LZMA, xz, unxz, xz -t, xz -q, xz -T0, xz -9, zstd, Igor Pavlov, bzip2, gzip