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Linux Foundation’s invitation-only event unites business and technical experts to collaborate on technical issues, the business of open source, best practices in collaborative development, and how to grow open source communities.

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Friday, February 20 • 9:00am - 9:50am
CPU Performance management on ARM64 Servers - Ashwin Chaugule, QuIC

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The ARM64 linux ecosystem for servers is a fairly new and exciting place to be in. If there is one thing to be learned from the ARM32 world, it is the need to avoid fragmentation in various implementations of the ARM64 code. This presentation goes over some ideas and plans to help with this in the CPUfreq subsystem for ARM64 server drivers. More specifically, we will go over the proposal from the ACPI v5.1 specification to control CPU performance using the methods called CPPC (Collaborative Processor Performance Controls). With a standardized specification which is generic enough to express platform specific details, we aim to unify CPUfreq drivers in the ARM64 server space. The presentation will cover the concepts behind CPPC, its advantages and how to apply it to the Linux kernel today and ideas to exploit other CPPC capabilities in the future.
Speakers
AC

Ashwin Chaugule

Senior Engineer, Qualcomm Innovation Center
Ashwin Chaugule works at the Qualcomm Innovation Center as a Linux kernel developer. Currently he works with the folks at Linaro to enable the ARM64 server software ecosystem, where his main focus has been on CPU performance management. He has worked on Linux since 2003 in various... Read More →

Friday February 20, 2015 9:00am - 9:50am PST
Dry Creek Valley Ballroom II
  Wildcard

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