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Bifrost - Analysis and Optimization of Network I-O Tax in Confidential Virtual Machines

USENIX via YouTube

Overview

Explore a 19-minute conference talk from USENIX ATC '23 that delves into the analysis and optimization of network I/O performance in Confidential Virtual Machines (CVMs). Learn about the Bifrost system, a novel para-virtualized I/O design that addresses the CVM-IO tax issue, which significantly impacts network performance in CVMs. Discover how Bifrost eliminates I/O payload bouncing tax and reduces packet processing tax while maintaining security guarantees. Examine the implementation of Bifrost and its impressive performance improvements for I/O-intensive applications in CVMs, even surpassing traditional VMs in some cases. Gain insights into the research conducted by experts from Shanghai Jiao Tong University and associated institutions, and understand the potential implications for enhancing network performance in confidential computing environments.

Syllabus

USENIX ATC '23 - Bifrost: Analysis and Optimization of Network I/O Tax in Confidential Virtual...

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USENIX

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