But 7-zip uses multiple compression algorithms. Most of the time, the default algorithm (LZMA) is used. But the option to use the improved LZMA2 has been around for a while. This algorithm has been designed so that it can use multiple cores, whereas LZMA can only use 2 CPU cores effectively. And I have to say: speed increase on “Normal” compression is already 50%. I have not yet checked out the resulting size, but I need a deflation to about 10% of the original file, and that really seems feasible right now (halfway the process).
Maybe you’ve wondered about this, and maybe you already knew this. But if you didn’t yet, I hope I just made your waiting times a bit shorter 🙂
Update: to use the LZMA2-algorithm from the commandline, use the following:
7z a -m0=lzma2 -mmt6 o:\1.7z o:\1.dmp