Testing read and write speed of a device

[daniel.m.tripp (Dan Tripp)]

There was also this thread from 3 years ago - more about SD-Cards, but still relevant to USB thumb drives :

Micro SD cards for things like Raspberry Pi

did a quick google-fu, and someone here : Testing SD Cards with Linux | Chris Collins suggested using “disks” util that comes stock with gnome distros (like ubuntu)… i.e. hit super key and type disks, and there’s a benchmarking tool!!! Just graphing a circa 2018 64 GB Sandisk “Ultra” VS an 2015/16 16 GB Sandisk “Ultra”… and the bigger one is wiping the floor with the smaller one… That would explain the “anecdotal” lag I’m getting with my current build of RaspbiOS arm64 on a 16 GB micro SD ca…