17 lines
763 B
YAML
17 lines
763 B
YAML
---
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features:
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- |
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Introduces NovaComputeCpuSharedSet parameter to set
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``[compute]/cpu_shared_set`` option for compute nodes.
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Some workloads run best when the hypervisor overhead processes
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(emulator threads in libvirt/QEMU) can be placed on different
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physical host CPUs than other guest CPU resources. This allows
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those workloads to prevent latency spikes for guest vCPU threads.
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To place a workload's emulator threads on a set of isolated
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physical CPUs, set the configuration option to the set of host
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CPUs that should be used for best-effort CPU resources. Then set
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a flavor extra spec to ``hw:emulator_threads_policy=share`` to
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instruct nova to place that workload's emulator threads on that
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set of host CPUs.
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