RosenBridge: A Framework for Enabling Express I/O Paths Across the Virtualization...
summary
RosenBridge introduces virtio-ndp as a paravirtual device that offloads NDP logic to uBPF in QEMU userspace, hooks into an io_uring backend for async scheduling, and provides secure guest-host address translation helpers with confined memory access and collaborative throttling. Implementation enables XRP and GDS across the virtualization boundary, reports over 400% read throughput versus virtio and ~100% versus SPDK, CPU per operation under 15%, GDS latency reductions of 27–56%, and at least 35% lower CPU utilization.
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chapters (9)
- 0:00RosenBridge framework intro
- 1:22Virtualization tax on storage
- 3:10Near Data Processing in cloud
- 4:16RosenBridge design goals
- 6:06System components and execution
- 8:32Scheduling and semantic gap
- 9:57Rosen XRP showcase
- 11:22RosenGDS for GPU Direct Storage
- 12:46Conclusion and future work
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