Apparently these ~4k spikes are showing up only on AMD, and not on Intel, which is the one known to suffer from the 4k aliasing problem. I wonder if it has to

Apparently these ~4k spikes are showing up only on AMD, and not on Intel, which is the one known to suffer from the 4k aliasing problem. I wonder if it has to do with a non-ideal implementation of virtual address resolution for the next page.