Disk Perf Utility. Run IO Benchmarks. Speed Test for Devices.
Runnung diskoz provides the following result
master@ZG14:~$ python diskoz.py
Done.
Created 6144 files of 1MB each in 102.98610496520996 seconds.
Creation rate: 59.658533566984815 mb per second
Transferred 6144 files of 1MB each in 147.2998549938202 seconds.
Cleaning up...
Transfer rate: 41.71083535864828 MB per second
I designed this to test variable speed in microSD and SSD and HDD in Raspberry Pi and WSL for checking small file transfers (usually slower) and large file transfers (usually faster) both.