How to fix low speed ssd in linux?

Question

linux

I bought a samsung 850, but the speed of writing and reading is much lower than stated (twice)
Has anyone come across?
thanks for the help

Answer 1

And you don't accidentally sit on SATA2 instead of SATA3.

Answer 2

I have not come across, but I can only say one thing - you need to look at the office. site or google, find a driver for it.

Answer 3

If I were you, I would be more concerned about the access time of 4.5ms

Answer 4

I think it's worth starting with dmesg - very interesting how the drive was determined (SATA2, SATS3).
Then it's worth doing dd if=/dev/zero of=/dev/sdb1 bs=1G count=10 oflag=direct (roughly of course, fio is better, but it's fine for us anyway) and see the results.