Comment by menaerus
2 hours ago
Then it should be pretty easy to display that 20% "faster for free", no? But as always the devil is in the details. I experimented a lot with huge pages, and although in theory you should see the performance boost, the workloads I have been using to test this hypothesis did not end up with anything statistically significant/measurable. So, my conclusion was ... it depends.
Of course, it only helps workloads that exhibit high rates of page table walking per instruction. But those are really common.