Page Table Memory Consumption
Summary
The article analyzes page table memory consumption in Linux, contrasting hashed page tables with traditional tree-based page tables and examining the impact on TLB coverage, memory usage, and cache behavior. It traces historical and modern developments—from Torvalds’ discussions to patches adding page table metrics—then surveys practical implications for large memory workloads, including huge pages and NUMA-aware designs. The piece cites real-world lessons from databases and HPC workloads and highlights ongoing trade-offs between memory footprint and performance.