QoS Handling with DVFS (CPUfreq & Devfreq) - The Linux Foundation

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Conclusion – Future Work 2/3 What’s Next – 2 Thermal-aware DVFS Integrating w/ Thermal f/w DVFS driver = Thermal cooler device Scheduler-aware DVFS Turbo Boost*-like Support Adjust MAX freq according to # cores activated # Threads # Cores activated32* Trademark of Intel Samsung Electronics
Conclusion – Future Work 3/3 Future Work (farther…) (Many) Multi/Hetero-core DVFS Support Scheduler support might kick in. ARM Cortex A15 Big-Little model is the starting point. Compiler/Algorithm support for DVFS mechanisms Had some approaches, but not efficient enough (yet)33Samsung Electronics
Page 3 and 4: Topics Introduction DVFS (Dynamic V
Page 5 and 6: Linux Kernel Power ManagementLinux
Page 7 and 8: Intro: DVFS 2/2 Sampling the utiliz
Page 9 and 10: Intro: Terms DVFS Target A device w
Page 11 and 12: Performance Issues of DVFS: 1/3 Iss
Page 13 and 14: Performance Issues of DVFS: 3/3 Iss
Page 15 and 16: The Possible Solution QoS handling
Page 17 and 18: QoS on DVFS Devices (DVFS f/w): Wor
Page 19 and 20: Handling QoS Requests: Design-After
Page 21 and 22: Handling QoS Requests: Status New G
Page 23 and 24: DVFS Response Latency: Motivation R
Page 26 and 27: DVFS Response Latency: DesignPM-QoS
Page 29 and 30: DVFS Response Latency: Status Used
Page 31: Conclusion - Future Work 1/3 What
Page 35 and 36: Appendix35Samsung Electronics

QoS Handling with DVFS (CPUfreq & Devfreq) - The Linux Foundation

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