High performance virtual machines in oVirt
summary
oVirt adds a new High Performance VM type that preconfigures automatic tweaks (serial console, disabled USB/sound/balloon, qemu cache, preallocated disks) plus manual options for CPU pinning and NUMA alignment. Networking enables per-vNIC multi-queue and an IO thread (default 1). Memory supports huge pages preallocated and disallows dynamic ballooning. Live migration is supported but limited to compatible hosts and is recommended to be manual. Result: near bare‑metal throughput at the cost of reduced flexibility.
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