The simulation shows a virtual address either resolving instantly via a TLB hit or triggering a multi-level page table walk on a miss, with each hierarchy level's memory lookup visualized as a hop toward the final physical frame.
Choose sequential or scattered memory access patterns and step through accesses to see the resulting TLB hit rate and watch individual misses trigger the cascading page table walk, then compare timing between the two patterns.
Pattern selector for sequential vs scattered access, step/play controls, and a TLB occupancy display
A single TLB miss on a four-level page table can require up to four sequential dependent memory reads just to compute one address, which is why TLB hit rates above 99 percent are considered essential for good performance rather than a nice bonus.
The simulation shows a virtual address either resolving instantly via a TLB hit or triggering a multi-level page table walk on a miss, with each hierarchy level's memory lookup visualized as a hop toward the final physical frame.
The simulation shows a virtual address either resolving instantly via a TLB hit or triggering a multi-level page table walk on a miss, with each hierarchy level's memory lookup visualized as a hop toward the final physical frame.
Choose sequential or scattered memory access patterns and step through accesses to see the resulting TLB hit rate and watch individual misses trigger the cascading page table walk, then compare timing between the two patterns.
A single TLB miss on a four-level page table can require up to four sequential dependent memory reads just to compute one address, which is why TLB hit rates above 99 percent are considered essential for good performance rather than a nice bonus.