Archiving an workspace with lots of files (400k) leads to an 5 hours waiting time until the progress is finished when using Tar.gz method. Zip Method finishes in 2 minutes. Creating an tar.gz archive manually with gnu tar/gzip and default settings takes about 3-4 minutes.

Which compression level are you using? Consider lowering it or maybe even make it configurable. Are you using buffered streams?

Please fix this performance issue to make the method usable.

Greetings, Martin