360 Zhihui Cloud Developer

May 9, 2026 · Cloud Computing

Optimizing OpenStack Nova VM Port Attach/Detach Performance

The article analyzes why Nova VM port attach and detach operations can take 70‑90 seconds due to full‑cache refresh and coarse locks, proposes incremental cache updates and fine‑grained port locks, and shows benchmark results that cut attach time to 10‑17 s and detach time to about 7 s while eliminating lock contention and consistency errors.