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2022-03-27 18:10:28 UTC
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2022-03-21 02:21:11 UTC

uProf

AMD 出品的一款 perf 工具，增加了一些 X86 超集的 metrics，但 UI 比较丑。

x86 subset

You can refer to the CONFIG_X86_AMD_PSTATE tuning on ZenStates-Linux. The perf subset could be found in the linux perf tools. Also check /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver to see if the governor is available. The feature is switched on from Linux 5.17 (Ubuntu 22.04).

Reference

  1. https://faculty.sites.uci.edu/zhouli/files/2022/01/oakland22.pdf
  2. https://indico.cern.ch/event/730908/contributions/3153163/attachments/1730954/2810149/epyc.pdf
  3. https://www.nextplatform.com/2019/08/15/a-deep-dive-into-amds-rome-epyc-architecture/
  4. https://github.com/FPSG-UIUC/lotr