Tag
page-migration
- Jul 31, 2025 Reverse Mapping: Finding Every Page Table That Points at a Frame Why the kernel needs to go from a physical frame back to its mappings, how the reverse index is built and maintained, and what it costs in memory and lock contention. memory systems
- Jul 28, 2025 Page Migration: What a Move Between Nodes Costs How the kernel relocates a populated page from one node to another, why the operation needs to unmap every mapping first, and the conditions under which a requested migration silently does nothing. memory systems
- Mar 17, 2025 Device Memory Oversubscription and Page Migration Selling more device memory than exists requires evicting pages to host memory, and the cost of that depends entirely on how the device detects and services a miss. gpu computing
- Feb 2, 2024 Automatic NUMA Balancing and Its Failure Modes How the kernel samples faults to discover which node a task is really using, moves pages toward the task, and why the mechanism sometimes makes a workload slower than leaving it alone. memory systems