An introduction to amd-cppc CPU Performance Scaling Driver
Автор: The Xen Project
Загружено: 2025-09-30
Просмотров: 163
In this talk from Xen Summit 2025, Ray Huang and Penny Zheng introduce the amd-cppc CPU performance scaling driver for Xen. This new driver leverages Collaborative Processor Performance Control (CPPC) to provide finer-grained frequency management than legacy ACPI P-States. The session explains the driver’s two operation modes: passive mode, where Xen governors like ondemand or performance manage tuning, and active mode, where hardware automatically adjusts CPU core frequency based on workload, power, and thermal conditions.
Presented by Ray Huang, Principal Software Engineer at AMD, and Penny Zheng, Staff Software Engineer at AMD
Recorded at Xen Summit 2025 in San Jose, California
Slides / resources: https://xensummit2025.sched.com/event...
Learn more: https://xenproject.org
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