Scheduler-driven CPU frequency selection / Linux Plumbers Conference: Developing the Kernel, Libraries and Utilities

Scheduler-driven CPU frequency selection

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One Line Summary

Discuss current design and gather feedback on a cpu capacity-based frequency scaling policy.

Abstract

Discuss design of a scheduler-driven cpufreq policy based on recent patches introducing cpufreq_sched.c and gather feedback. Includes changes to scheduler and CPUfreq subsystem. If time permits, wander into the weeds regarding multi-scheduler class constraints (e.g. deadline scheduler bandwidth) and peripheral device constraints (e.g. DDR controller driver increasing CPU clock speed).

Presentation Materials

slides

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Speaker

Mike Turquette
Linaro
- Website: http://www.linaro.org/
- Blog: http://deferred.io/
- Twitter: mturquette
Biography

Linux kernel hacker since 2008, I focus on upstream power management frameworks. I currently maintain the clock framework. At Linaro I am involved in integrating CPUfreq with the scheduler.