nova/releasenotes/notes/hyper-v-vnuma-support-ffedf...

16 lines
891 B
YAML

---
features:
- The nova Hyper-V driver now supports symmetric NUMA topologies. This means
that all the NUMA nodes in the NUMA topology must have the same amount of
vCPUs and memory. It can easily be requested by having the flavor
extra_spec "hw:numa_nodes", or the image property "hw_numa_nodes".
An instance with NUMA topology cannot have dynamic memory enabled. Thus,
if an instance requires a NUMA topology, it will be spawned without
dynamic memory, regardless of the value set in the "dynamic_memory_ratio"
config option in the compute node's "nova.conf" file.
In order to benefit from this feature, the host's NUMA spanning must be
disabled.
Hyper-V does not guarantee CPU pinning, thus, the nova Hyper-V driver will
not spawn instances with the flavor extra_spec "hw:cpu_policy" or image
property "hw_cpu_policy" set to "dedicated".