Testing software depends on the manual and the curve parameters of the hard disk. Because the test items are mainly reading and writing tests for different file sizes, the curve will not be straight and there will be some fluctuations. Sometimes it fluctuates too much. Test it two or three times to see the maximum value, average value and minimum value, and then see what kind of hard disk you have and what effect you can achieve. Compare the measured parameters, so that you should have one.
If this test is unstable, there are three situations, one is that your hard disk is not good, the other is the host motherboard itself, and the third is the system problem.
You reinstall a good system first and then test it. If you can change to a better hard disk and then test it, you can test it first and then test it. There is also a low U, too small memory, and the motherboard bus is not good, which will also affect subjective operation.