So, I can't find anything on Google relating to diskpperf.exe, but know that many malware applications will disquise themselves as other processes or be named very similar to cause confusion like this. I would boot into Safe Mode with networking and download MalwareBytes and run a scan. Then boot back up into normal windows and run CCleaner's registry cleaner.
Humans are the only creatures that won't live up to the their potential. Give everything your all. When you die, die on E.
So I ask you, what do you intend to do now?