Feature request: compression estimate support

[axet]

Hello!

Filesystems with compression can compress data. Using system tools it is possible to see compression rate for file/folder.

Would be nice to have two optional file sizes original and compressed to see in gdu

For example to see how good folder is compressed you have to run following commmand on btrfs:

sudo compsize -x /usr

[xkix]

Hi,
the same applies to Windows; you can enable compression at the directory level. It would be practical to see the compressed size as well.
Thx for the tool!

[rhysperry111]

This would definitely be a useful feature. On my system (which uses btrfs) I regularly deal with files with a compression ratio of 10:1 and higher and they end up absolutely swamping everything else in gdu despite taking up very little actual space.

[kittydoor]

"btdu" supports this, and by only sampling a small number of files (instead of every file individually). Perhaps it's a good example to look at for inspiration in how to implement this in "gdu" if anyone ends up spending some time on this.

https://github.com/CyberShadow/btdu