GoKawiilvirtio-nvgpu project shows KVM guests hitting near-native Nvidia GPU performance
An open-source project called virtio-nvgpu forwards Nvidia kernel driver ioctls directly between a Linux KVM guest and host, letting the guest run Nvidia's unmodified user-mode drivers for Vulkan and NVENC without API-level translation. Benchmarks on an RTX 3060 show guest frame times within about 2% of bare metal for frames above roughly 2ms, with CPU usage in the guest matching or slightly beating the host over a 12-second, ~100fps test.
GoKawiil's interpretation of the reporting above, not reported fact.
By passing driver calls through at a low level rather than emulating APIs, the approach could let multiple VMs share a single GPU for headless game or app streaming with little performance penalty, according to the project's published benchmarks. If reproduced independently, this could matter for cloud gaming and virtual desktop infrastructure that currently relies on costlier GPU virtualization schemes, though the project itself notes its numbers don't cover all workloads or multi-guest scenarios.
- virtio-nvgpu forwards Nvidia driver ioctls at the ABI level instead of translating APIs like Vulkan or CUDA
- Tests on an RTX 3060 show guest rendering within 2% of bare-metal performance for frames above ~2ms
- CPU overhead in the guest was comparable to or lower than bare-metal host usage in the measured run
NVIDIA GeForce RTX 3060 Graphics Card — This is the exact GPU used to benchmark virtio-nvgpu's near-native passthrough performance, making it a solid choice for anyone experimenting with KVM GPU virtualization or headless game streaming setups. It offers strong Vulkan and NVENC encoding capabilities, ideal for compositing and hardware-accelerated video encoding workloads like those described in the article.
See NVIDIA GeForce RTX 3060 Graphics Card on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: github.com, 2026-09-24
Published there as: “Virtio-nvgpu: Near-native Nvidia GPU access inside a KVM guest”
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