[pyxy]

From Compression Ratings website I've catched this:

    program    comp-ratio  comp-time  decomp-time
    bzip2      34.1%       468.09s    167.03s
    gzip -5    37.6%       141.30s    34.76s
    lz4 -c2t4  43.9%       52.72s     5.84s

http://compressionratings.com/sort.cgi?rating_sum.full+p3

[alecco]

  program       comp-ratio   comp-time  decomp-time
  pigz -1          40.3%       26.92s      20.31s
  lz4 -c2t4        43.9%       52.72s       5.84s
  info-zip -1      41.3%      122.31s     119.81s

More relevant would be a comparison with gzip -1, lzop, snappy and rolz.

Also the test data is mixed. It is not very helpful to see where this algorithm shines.

Also note the memory usage shots up from 5m/2m for info-zip -1 to 46m/42m for the specific case of lz4 you picked.

EDIT: also bzip2 seems to be paticularly bad for this specific dataset, other algorithms in that category get better compression ratios. Added pigz to the comparison (info-zip with pthreads).