LinuxCon Europe + CloudOpen Europe has ended
Wednesday, October 23 • 11:05am - 11:55am
Power Capping - Keeping Linux Within Power Limits Efficiently - Jacob Pan, Intel Corp.

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Linux must operate in a world of limited power budgets. Hand-held devices must simultaneously be responsive, cool,light, and deliver long battery life. Embedded systems must be silent. Servers must maximize compute efficiency while obeying site-wide power limits. Linux infrastructure for responding to power and thermal limits is rooted in a history of these being exceptional events. How will Linux handle a future where power and thermal limits are reached in normal operation? Here we summarize the techniques available to Linux to respond to power and thermal limits, contrasting their effectiveness. We detail power-clamp, a new technique to manage power through idle injection. We show how power-clamp can provide high efficiency operation as compared to previous power capping techniques.


Jacob Pan

Linux Kernel Developer, Intel Corp
Jacob is a Linux kernel developer at Intel since 2005. He worked on PowerPC at Freescale prior to joining Intel. He has worked in many areas around Linux kernel, including arch/x86, device drivers (USB, I2C, PMIC, sensors, timers). His recent interest and work is on power management... Read More →

Wednesday October 23, 2013 11:05am - 11:55am

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