[Bug 217931] amd-pstate lacks crucial features: CPU frequency and boost control

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=217931

--- Comment #55 from Perry Yuan(AMD) (Perry.Yuan@amd.com) ---
(In reply to Sjoer van der Ploeg from comment #54)
> (In reply to Perry Yuan(AMD) from comment #53)
> > How about the output of "lscpu -ae"?
> 
> Sorry for the late reply:
> 
> CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE    MAXMHZ   MINMHZ       MHZ
>   0    0      0    0 0:0:0:0          yes 4550.0000 550.0000 3569.5090
>   1    0      0    1 1:1:1:0          yes 4550.0000 550.0000 3552.6860
>   2    0      0    2 2:2:2:0          yes 4550.0000 550.0000 3559.3779
>   3    0      0    3 3:3:3:0          yes 4550.0000 550.0000 3854.7759
>   4    0      0    4 4:4:4:0          yes 4550.0000 550.0000 3590.6599
>   5    0      0    5 5:5:5:0          yes 4550.0000 550.0000 3552.8989
>   6    0      0    6 6:6:6:0          yes 4550.0000 550.0000 3840.7690
>   7    0      0    7 7:7:7:0          yes 4550.0000 550.0000 3584.2910
>   8    0      0    0 0:0:0:0          yes 4550.0000 550.0000 3546.3811
>   9    0      0    1 1:1:1:0          yes 4550.0000 550.0000 3551.5229
>  10    0      0    2 2:2:2:0          yes 4550.0000 550.0000 3591.2500
>  11    0      0    3 3:3:3:0          yes 4550.0000 550.0000 3594.0801
>  12    0      0    4 4:4:4:0          yes 4550.0000 550.0000 3552.0400
>  13    0      0    5 5:5:5:0          yes 4550.0000 550.0000 3572.1050
>  14    0      0    6 6:6:6:0          yes 4550.0000 550.0000 4124.7349
>  15    0      0    7 7:7:7:0          yes 4550.0000 550.0000 3583.7170

The max frequency value is correct to be 4.55GHZ on your system by the CPPC
capabilities reported by your firmware.
4.55GHZ is boost frequency which cannot maintain long time, it can try EPP mode
& performance profile, and run some lighter workload, the freq will be reaching
to max freq. 

>  14    0      0    6 6:6:6:0          yes 4550.0000 550.0000 4124.7349

seeing from this, the freq is close to 4.5GHz, please try the EPP and
performance profile on your system. 
then check the lscpu -ae output to confirm if it can reach 4.5GHz as well.

Perry.

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