At last I thrashed away those good ol' st380011a I used for years in order to maintain multiple back ups for my docs, I replaced them by cheapo kingston usb flash drives.
I've bought total four because I use three but one apparently died.
Now two of them run kinda good velocities but the other one seems more slow.
Can I get a program that will print me read and write benchmarks for the drives? I need that it would do its thing using only the available space.
Using Terminal and Homebrew if necessary wouldn't be an issue.
Also should I use this ìotop` program while rsyncing in order to verify the possibly different drive speeds?
$ iotop dtrace: system integrity protection is on, some features will not be available dtrace: failed to initialize dtrace: DTrace requires additional privileges