I decided to take a dump of the Opus' process. Its working set was at 600MB and it went up to 1.7GB when I took the dump. A bit too much for me to upload, but, as the dump thread says, it compress well.
'7zip, best, lzma2, solid' and the output was 215MB.
'zip, best' and the output was 600MB.
This prompted me to wonder if it would be a good idea to write a script that automatically tried a bunch of parameters and selected the output with the lowest size. Could be handy when processing power is cheap and storage/network is costly.
I don't have extensive knowledge of the capabilities of the currently available compression algorithms, so I want to borrow the communities' knowledge.
What settings are probably worthy of a try?