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システムを "intel_pstate=disable" で起動した場合、/proc/cpuinfo が、RHEL8.5 でのクロック速度が RHEL8.4 に比べて低下したと報告するのはなぜですか?

Solution In Progress - Updated -

Issue

  • システムを "intel_pstate=disable" で起動した場合、/proc/cpuinfo が、RHEL8.5 でのクロック速度が RHEL8.4 に比べて低下したと報告するのはなぜですか?
RHEL 8.4
processor  :  0   cpu  MHz  :  2310.949
processor  :  1   cpu  MHz  :  2299.749
processor  :  2   cpu  MHz  :  2303.620
processor  :  3   cpu  MHz  :  2299.771
processor  :  4   cpu  MHz  :  2299.588
processor  :  5   cpu  MHz  :  2303.086
processor  :  6   cpu  MHz  :  2307.757
processor  :  7   cpu  MHz  :  2300.443
processor  :  8   cpu  MHz  :  2306.364
processor  :  9   cpu  MHz  :  2305.940
processor  :  10  cpu  MHz  :  2308.547
processor  :  11  cpu  MHz  :  2299.345
processor  :  12  cpu  MHz  :  2301.566
processor  :  13  cpu  MHz  :  2304.879
processor  :  14  cpu  MHz  :  2296.064
processor  :  15  cpu  MHz  :  2309.422
RHEL 8.5
processor  :  0   cpu  MHz  :  2099.877
processor  :  1   cpu  MHz  :  2299.976
processor  :  2   cpu  MHz  :  2099.877
processor  :  3   cpu  MHz  :  2099.877
processor  :  4   cpu  MHz  :  2099.877
processor  :  5   cpu  MHz  :  2099.877
processor  :  6   cpu  MHz  :  2099.877
processor  :  7   cpu  MHz  :  2099.877
processor  :  8   cpu  MHz  :  2099.877
processor  :  9   cpu  MHz  :  2099.877
processor  :  10  cpu  MHz  :  2099.877
processor  :  11  cpu  MHz  :  2099.877
processor  :  12  cpu  MHz  :  2099.877
processor  :  13  cpu  MHz  :  2099.877
processor  :  14  cpu  MHz  :  2099.877
processor  :  15  cpu  MHz  :  2099.877

Environment

  • Red Hat Enterprise Linux 8.5
  • 物理サーバー
  • tuned-profiles-realtime

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