It takes 15s on my workstation and 5 minutes on a fileserver with about 17 million files (on a mix of fast and slow disks, and too old a kernel for io_uring).

It takes 15s on my workstation and 5 minutes on a fileserver with about 17 million files (on a mix of fast and slow disks, and too old a kernel for io_uring). Database sizes are 30MB and 200MB respectively.