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Unified SR-IOV for Redhat Linux KVM

Traditionally, virtualized servers have relied on the hypervisor to fully manage data flow, which provides powerful services and management capabilities, but at the same time introduces overheads and bottlenecks that can dramatically impact network I/O performance. To address these performance issues, a new standard is emerging called single-root I/O virtualization, or SR-IOV, that promises to significantly improve network I/O performance on virtualized servers. SR-IOV provides a mechanism for guest operating systems to bypass the Redhat Linux kernel-based virtual machine (KVM) host and interact directly with the network hardware. The objective of this PCI standard is to enable virtualized servers to achieve far greater network performance than is realized today with hypervisor-based network virtualization techniques. As servers become increasingly powerful, and the number of consolidated workloads on virtualized servers continues to scale, addressing this network I/O bottleneck is becoming increasingly important.

Discover how Solarflare 10GbE technology enables 5-7x performance improvement while preserving hypervisor services, such as live migration.

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