IOIsolation
IO isolation, or input/output isolation, refers to techniques that separate input/output paths of processes, devices, or virtual machines to minimize interference and improve determinism, reliability, and security. It encompasses software-level mechanisms such as per-process I/O queues and quotas, as well as hardware-assisted methods including IOMMU-based device isolation and PCIe passthrough, and virtualization features like SR-IOV and virtual I/O channels.
In operating systems and virtualization, IO isolation is implemented through I/O scheduling, throttling, and resource controls
Applications of IO isolation span cloud platforms, databases, and storage arrays, where it improves performance predictability,
Benefits of IO isolation include reduced interference among workloads, improved reliability, and stronger security boundaries. Trade-offs
See also: I/O scheduling, IOMMU, QoS, cgroups, virtualization I/O.