May 23, 2016 · The purpose of SR-IOV is to provide isolation of resources that enable the scalability of VMs and to enable a near-bare metal performance for I/O operations. SR-IOV defines two important terms:

Single Root I/O Virtualization (SR-IOV) is a hardware reference that enables a single PCI Express (PCIe) endpoint to be used as multiple separate devices. This is achieved through the introduction of two PCIe functions: Physical Functions (PFs) and Virtual Functions (VFs).

Jul 25, 2024 · In this article, we explore a recent study by the Red Hat OpenStack Performance and Scale team, which demonstrated the capabilities of SR-IOV using 100GbE NVIDIA ConnectX-6 adapters within a Red Hat OpenShift on Red Hat OpenStack (ShiftonStack) setup.

Oct 23, 2023 · SR-IOV is commonly used in conjunction with an SR-IOV enabled hypervisor to provide virtual machines direct hardware access to network resources hence increasing its performance. In this chapter we will demonstrate setup and configuration of SR-IOV in a Red Hat Linux environment using Mellanox ConnectX® VPI adapter cards family.

SR-IOV adds support for the concept of a virtual function which, while presented as a PCI device on the hardware, is a virtual interface that is provided by the physical function. This chapter contains procedures for configuring SR-IOV to pass a physical NIC through to a virtual instance.

In your Red Hat OpenStack Platform NFV deployment, you can achieve higher performance with single root I/O virtualization (SR-IOV), when you configure direct access from your instances to a shared PCIe resource through virtual resources.

RHEL OpenStack Platform 6 extended single root I/O virtualization (SR-IOV) support to virtual machine networking. This means that OpenStack is able to put aside the previous requirement for virtual bridges, and instead extend the physical NIC's capabilities directly through to the instance.

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Mar 5, 2015 · Single root I/O virtualization, officially abbreviated as SR-IOV, is a specification that allows a PCI device to separate access to its resources among various PCI hardware functions: Physical Function (PF) and one or more Virtual Functions (VF).

Jun 14, 2024 · What is the current status of high availability with SR-IOV in Red Hat OpenStack Platform 10? What is the current status about instance migration with SR-IOV? Is it possible to attach a PF to OVS bridge and at the same time use it as part of SR-IOV neutron ml2 plugin