Yes, the new compression algorithms (BWT and LZ77-based) are slower and require a lot more memory than DEFLATE (*zip) in most cases. This guy did a not so rigo

Yes, the new compression algorithms (BWT and LZ77-based) are slower and require a lot more memory than DEFLATE (*zip) in most cases. This guy did a not so rigorous analysis but it is mostly OK: http://changelog.complete.org/archives/931-how-to-think-about-compression-part-2 http://changelog.complete.org/archives/931-how-to-think-abou... A little bird told me there's a better algorithm in speed/compression rate coming soon ;)