Here's something about the UNIX gzip
command I discovered recently:
You can control the speed of compression by specifying '-n', (where 'n' is a number between 1 and 9), as a command switch. Of course, there is a tradeoff between compression speed and efficiency. 'gzip -1 gives the quickest, least efficient data compression, whereas 'gzip -9 takes the longest, but typically gives the most efficient data compression. The default equates to 'gzip -6'.
All this and more can be gleaned from your UNIX man pages. Experienced UNIX users quite possibly know about this command option but I feel this could be useful for 'newbies'.