For the record, I used to have this problem and neither "force-unsafe-io" nor "nodelalloc" nor "discard" option in fstab solved the problem. Because... my problem was that I was using a very old SSD model that did not even have TRIM. Every write required an erase cycle and obviously that killed performance. Problem fixed with a new SSD.
For the record, I used to have this problem and neither "force-unsafe-io" nor "nodelalloc" nor "discard" option in fstab solved the problem. Because... my problem was that I was using a very old SSD model that did not even have TRIM. Every write required an erase cycle and obviously that killed performance. Problem fixed with a new SSD.