24-28 August 2020
US/Pacific timezone

Performance improvements in power-sharing scenarios

28 Aug 2020, 09:20
25m
Microconference2/Virtual-Room (LPC 2020)

Microconference2/Virtual-Room

LPC 2020

150
Power Management and Thermal Control MC Power Management and Thermal Control MC

Speakers

Rafael Wysocki (Intel Open Source Technology Center) Francisco Jerez

Description

There are use cases in which the processor shares power budget with some other data-processing devices, like a GPU. In those cases it may be possible to improve the performance of the system by limiting the maximum frequency of CPUs. We will discuss possible ways to utilize this observation in the Linux kernel.

See https://lore.kernel.org/linux-pm/20200428032258.2518-1-currojerez@riseup.net/ for one possible approach to this problem.

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Primary author

Rafael Wysocki (Intel Open Source Technology Center)

Co-author

Presentation Materials