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Network Functions Virtualization Planning and Configuration Guide
10.2. 配置 OVS-DPDK 参数

10.2. 配置 OVS-DPDK 参数

重要

您必须确定 network-environment.yaml 文件中设置的 OVS-DPDK 参数的最佳值，以优化 OVS-DPDK 的 OpenStack 网络。有关详细信息，请参阅网络功能虚拟化规划和配置。

将 OVS-DPDK 的自定义资源添加到 resource_registry 下：

  resource_registry:
    # Specify the relative/absolute path to the config files you want to use for override the default.
    OS::TripleO::ComputeOvsDpdkSriov::Net::SoftwareConfig:
      nic-configs/computeovsdpdksriov.yaml
    OS::TripleO::Controller::Net::SoftwareConfig:
      nic-configs/controller.yaml

  resource_registry:
    # Specify the relative/absolute path to the config files you want to use for override the default.
    OS::TripleO::ComputeOvsDpdkSriov::Net::SoftwareConfig:
      nic-configs/computeovsdpdksriov.yaml
    OS::TripleO::Controller::Net::SoftwareConfig:
      nic-configs/controller.yaml

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在 parameter_defaults 下，将隧道类型和网络类型设置为 vxlan。
```
NeutronTunnelTypes: 'vxlan'
NeutronNetworkType: 'vxlan'
```
```
NeutronTunnelTypes: 'vxlan'
NeutronNetworkType: 'vxlan'
```
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在 parameters_defaults 下，设置网桥映射：

# The OVS logical->physical bridge mappings to use.
NeutronBridgeMappings:
  - dpdk-mgmt:br-link0

# The OVS logical->physical bridge mappings to use.
NeutronBridgeMappings:
  - dpdk-mgmt:br-link0

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在 parameter_defaults 下，为 ComputeOvsDpdkSriov 角色设置特定于角色的参数：

  ##########################
  # OVS DPDK configuration #
  # ########################
  ComputeOvsDpdkSriovParameters:
    KernelArgs: "default_hugepagesz=1GB hugepagesz=1G hugepages=32 iommu=pt intel_iommu=on isolcpus=2-19,22-39"
    TunedProfileName: "cpu-partitioning"
    IsolCpusList: "2-19,22-39"
    NovaVcpuPinSet: ['4-19,24-39']
    NovaReservedHostMemory: 2048
    OvsDpdkSocketMemory: "3072,1024"
    OvsDpdkMemoryChannels: "4"
    OvsDpdkCoreList: "0,20,1,21"
    OvsPmdCoreList: "2,22,3,23"
    NovaLibvirtRxQueueSize: 1024
    NovaLibvirtTxQueueSize: 1024

  ##########################
  # OVS DPDK configuration #
  # ########################
  ComputeOvsDpdkSriovParameters:
    KernelArgs: "default_hugepagesz=1GB hugepagesz=1G hugepages=32 iommu=pt intel_iommu=on isolcpus=2-19,22-39"
    TunedProfileName: "cpu-partitioning"
    IsolCpusList: "2-19,22-39"
    NovaVcpuPinSet: ['4-19,24-39']
    NovaReservedHostMemory: 2048
    OvsDpdkSocketMemory: "3072,1024"
    OvsDpdkMemoryChannels: "4"
    OvsDpdkCoreList: "0,20,1,21"
    OvsPmdCoreList: "2,22,3,23"
    NovaLibvirtRxQueueSize: 1024
    NovaLibvirtTxQueueSize: 1024

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注意

要防止创建客户机期间失败，请在每个 NUMA 节点上至少分配一个具有同级线程的 CPU。在示例中，OvsPmdCoreList 参数的值代表来自 NUMA 0 的核心 2 和 22，以及来自 NUMA 1 的核心 3 和 23。

注意

巨页由虚拟机消耗，以及使用 OvsDpdkSocketMemory 参数的 OVS-DPDK。要计算虚拟机的巨页数量，请从 boot 参数值中减去 OvsDpdkSocketMemory 值。您还必须将 hw:mem_page_size=1GB 添加到与 DPDK 实例关联的类别中。

注意

OvsDPDKCoreList 和 OvsDpdkMemoryChannels 是必需的，必须正确设置才能防止失败。

为 SR-IOV 配置特定于角色的参数：

  ##########################
  #  SR-IOV configuration  #
  ##########################
  NeutronMechanismDrivers: ['openvswitch','sriovnicswitch']
  NovaSchedulerDefaultFilters: ['RetryFilter','AvailabilityZoneFilter','RamFilter','ComputeFilter','ComputeCapabilitiesFilter','ImagePropertiesFilter','ServerGroupAntiAffinityFilter','ServerGroupAffinityFilter','PciPassthroughFilter','NUMATopologyFilter']
  NovaSchedulerAvailableFilters: ["nova.scheduler.filters.all_filters","nova.scheduler.filters.pci_passthrough_filter.PciPassthroughFilter"]
  NovaPCIPassthrough:
    - vendor_id: "8086"
      product_id: "1528"
      address: "0000:06:00.0"
      trusted: "true"
      physical_network: "sriov-1"
    - vendor_id: "8086"
      product_id: "1528"
      address: "0000:06:00.1"
      trusted: "true"
      physical_network: "sriov-2"

  ##########################
  #  SR-IOV configuration  #
  ##########################
  NeutronMechanismDrivers: ['openvswitch','sriovnicswitch']
  NovaSchedulerDefaultFilters: ['RetryFilter','AvailabilityZoneFilter','RamFilter','ComputeFilter','ComputeCapabilitiesFilter','ImagePropertiesFilter','ServerGroupAntiAffinityFilter','ServerGroupAffinityFilter','PciPassthroughFilter','NUMATopologyFilter']
  NovaSchedulerAvailableFilters: ["nova.scheduler.filters.all_filters","nova.scheduler.filters.pci_passthrough_filter.PciPassthroughFilter"]
  NovaPCIPassthrough:
    - vendor_id: "8086"
      product_id: "1528"
      address: "0000:06:00.0"
      trusted: "true"
      physical_network: "sriov-1"
    - vendor_id: "8086"
      product_id: "1528"
      address: "0000:06:00.1"
      trusted: "true"
      physical_network: "sriov-2"

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10.2. 配置 OVS-DPDK 参数

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