公开(公告)号：US20230004417A1

公开(公告)日：2023-01-05

申请号：US17903327

申请日：2022-09-06

Applicant: Intel Corporation

Inventor： Karthik V. NARAYANAN ,  Raghunathan SRINIVASAN ,  Karthik KUMAR

IPC: G06F9/455 ,  G06F9/54

Abstract: Scalable I/O Virtualization (Scalable IOV) allows efficient and scalable sharing of Input/Output (I/O) devices across a large number of containers or Virtual Machines. Scalable IOV defines the granularity of sharing of a device as an Assignable Device Interface (ADI). In response to a request for a virtual device composition, an ADI is selected based on affinity to the same NUMA node as the running virtual machine, utilization metrics for the Input-Output Memory Management Unit (IOMMU) unit and utilization metrics of a device of a same device class. Selecting the ADI based on locality and utilization metrics reduces latency and increases throughput for a virtual machine running critical or real-time workloads.