I think people do detect cache issues. Considering the fact that an access to DRAM is like ~150 or more cycles slower... your programs if written even normally

I think people do detect cache issues. Considering the fact that an access to DRAM is like ~150 or more cycles slower... your programs if written even normally may starve for RAM. Also, people sometimes people confuse TLB flushing with overall cache flushing as mentioned at the end of your article. Also, tagged TLB flushing is still not commonly used (to my knowledge) The reality is that there is a huge performance hit whenever these systems need to be used by a new process or context. Maybe people are equating this experience to 'flushing'.