I'm a big fan of pigz. I use it in my home-grown backup script for my Linux laptop. It can compress the incremental tar output from my filesystem snapshot fast

I'm a big fan of pigz. I use it in my home-grown backup script for my Linux laptop. It can compress the incremental tar output from my filesystem snapshot fast enough to saturate the I/O to my external USB3 hard drive. This is a low bar, but single-threaded gzip (or bzip2) could not do it!