Automatic dedupe - how to measure success?

[Rhubarb1]

I am now running automatic deduplication on two separate boxes (both configured as DS3622xs , 1 an Intel i7 14700K cpu, 64GB ECC memory and 2x83TB volumes; the other an E3-1245v6 cpu, 32GB ECC memory and a single 83TB volume.
Any ideas on how I can measure the amount of deduplication that has been achieved by the automatic background deduplication running on each system? It seems that Storage Analyser is useless for this process as it is only able to handle a maximum of 5000 duplicate files and it does not consolidate files that should be deduplicated by the automatic dedup process.

[007revad]

I've only ever seen the amount deduplicated for the last time Manual Deduplication ran.

In a DSM notification:

And in storage manager:

The details may be saved in a log.

[Rhubarb1]

Thanks @007revad for your feedback. I guess I'll eventually find a way to identify what storage savings I'm making, if any, by running dedupe as an automated process. Thanks for your work in developing the hdd application anyway. This is something I'd been looking for for several years, despite Synology's lack of interest in enabling the feature.

[Rhubarb1]

It seems that btdu is the way to go here. Relevant urls:
https://github.com/CyberShadow/btdu
https://wiki.tnonline.net/w/Btrfs/btdu
Now I've got to determine/build the appropriate measuring tools.

[007revad]

I just checked SynoCli Disk Tools to see if it included btdu but it doesn't. Though it does have ncdu, gdu, tdu, dua and duf. I have no idea if they are similar.