At 05:19 PM 98/05/07 -0400, dontspam-tzeruch(_at_)ceddec(_dot_)com wrote:
It seems that most versions of PGPlib use some derivative of the zip
algorithm that offers different compression levels, e.g. gzip defaults to
6. PGP 5.0 defaults to 1. Is there any level that SHOULD be used?
6 (default) is much better than 1, but slower.
The zlib implementation of deflate groups the nine compression levels in
two functions: a fast one for levels 1 to 3, and a slow (but not too slow)
one for levels 4 to 9. I believe either 3 or 4 will provide an equilibrium
between speed and compression (the default level 6 tends to better
compression, roughly equivalent to PKZIP in normal level).
Paulo Barreto.