NUMA Part 4: Closing the Xen dom0 I/O Gap
Summary
This post in the NUMA series explains how Edera makes Xen dom0 I/O NUMA-aware by fixing memory placement, synthesizing topology data, and aligning the paravirtual I/O path end-to-end. It details prerequisites, structural fixes, per-component changes to dom0 and domU drivers, and the impact on latency and bandwidth from improved locality. The result is a more predictable, lower-latency I/O path on NUMA systems.