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什么是 CPU "C-states"，以及如何根据需要禁用它们？

Solution In Progress - Updated -

Issue

  • 什么是 C-states、cstates 或 C-modes？
  • 如何禁用处理器睡眠状态？
  • 如何防止内核覆盖 BIOS C-state 选项？
  • 禁用 CPU C-states 是否需要 intel_idle.max_cstate=0？

Environment

  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5

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