Comment 108 for bug 1208993

I have tried to eliminate using a swapfile (as is default since Ubuntu 18.10) instead of a swap partition. Results are as follows:

Using a swap partition (10GB) instead of a swapfile seems to increase dd's writespeeds with about 10% and seems to decrease the amount of stutter and lag, but doesn't completely stop it from happening. Again, doing a swapoff seems to completely eliminate the issue.