360 Zhihui Cloud Developer

Aug 13, 2025 · Operations

Boost VM Live Migration Success: Taming Dirty Pages with Memory Copy Optimizations

This article explains why dirty‑page generation outpaces memory copy during VM live migration, describes the pre‑copy algorithm, and presents three practical KVM/QEMU tuning methods—xbzrle compression, memory compression, and CPU throttling—along with command‑line examples and performance results.