Hasty Briefsbeta

Linux Patches Improve Intel Nested VM Memory Performance Up to ~2353x in Test

16 hours ago
https://www.phoronix.com/news/Intel-Nested-VM-Faster-Memory
Copy Link
  • #Linux
  • #Performance
  • #Virtualization
  • AWS engineers improved Linux kernel's KVM VMX code for better nested VM performance.
  • Patches address correctness and performance issues with unmanaged guest memory.
  • New implementation uses gfn_to_pfn_cache, reducing overhead and ensuring proper invalidation.
  • Synthetic benchmarks show significant speedups: ~17x (map), ~2014x (unmap chunked), ~2353x (unmap).
  • Improvements target EC2 Nitro instances, enhancing nested virtualization efficiency.
AboutLogin