Just wanted to share this with the Dietpi devs to see what they think,
I recently purchased a rock64 (1GB RAM) version and am very pleased with the price & performance when compared to the Raspberry PI 3B+ and also against my 3.2Ghz Intel Dual Core (Haswell) Pentium file server.
Been doing various tests on the rock64 using the Dietpi image, Ayufan's Debian Stretch minimal image and Armbian's Ubuntu Bionic minimal image.
One of the tests performed was to setup all 5 environments with docker and run an SABnzbd container within docker.
In all 5 environments (inlcuding the RPI 3B+ and my Intel file sevrer), download performance of the SABnzbd docker is equal (I bandwidth limited them all to 30Mbps and they all achieved that consistently throughout the download), however, the biggest difference between them is the I/O performance when unrar unpacks a download. This is what I get (Note: Exact same download in all tests):
1) Intel Dual core Pentium file server running at 3.2Ghz (SSD connected via SATAIII) running Debian Stretch minimal - A 5GB rar set unpacks in 58 seconds.
2) Raspberry Pi 3B+ (SSD connected via USB2) running DietPi - A 5GB rar set unpacks in 5 minutes 30 seconds.
3) Rock64 (SSD connected via USB3) running Ayufan's Debian Stretch minimal - A 5GB rar set unpacks in 3 minutes.
4) Rock64 (SSD connected via USB3) running Armbian Bionic minimal - A 5GB rar set unpacks in 3 minutes.
5) Rock64 (SSD connected via USB3) running DietPi - A 5GB rar set unpacks in 1 minute 57 seconds!
I'm very impressed with the Rock64 USB3 performance but am puzzled as to why it is so much faster when using DietPi than with Ayufan's Stretch image and the Armbian Ubuntu Bionic image. All 3 seem to run the same kernel version.
What do you think the difference could be? I have tried my best to ensure all of these environments are the same and the same SSD drive has been used for all tests.
I'm actually now considering ditching my Intel file server and getting a dual USB3 dock for attaching 2 x large HDDs to the rock64 running DietPi.

I have also compiled snapraid for the rock64 and I get 81MB/s when doing a parity sync using a USB3 connected SSD (data drive) and a USB3 connected HDD (parity drive), connected to the rock64 via a usb3 hub.
Thanks very much for maintaining a great distro!