The "CPU frequency scaling tests" item of FWTS.

[Alex Hung]

Current fwts cpufreq test skips on most of Intel platforms so I guess you
are running on non-Intel platforms.

I tried this on an AMD system that I have access to but I wasn't able to
reproduce it. There can be something new to your platforms.

However, you can check the "CoordType" of the  _PSD objects. On Linux, you
can use acpidbg to extract _PSD such as below:

~$ sudo acpidbg

- find _PSD
                  \_SB.PR00._PSD Method       000000007c8c89b5 2BB Args 0
Len 0068 Aml 00000000a73baf04
                  \_SB.PR01._PSD Method       00000000379cf5e1 2D2 Args 0
Len 0068 Aml 000000000da97980
                  \_SB.PR02._PSD Method       00000000919af435 2D2 Args 0
Len 0069 Aml 00000000adf3ae6e
                  \_SB.PR03._PSD Method       00000000f1106bc8 2D2 Args 0
Len 0069 Aml 00000000af2872d2
                  \_SB.PR04._PSD Method       0000000065f09c75 2D2 Args 0
Len 0069 Aml 000000008b693086
                  \_SB.PR05._PSD Method       00000000f6713d96 2D2 Args 0
Len 0069 Aml 0000000098cb3982
                  \_SB.PR06._PSD Method       00000000003166b7 2D2 Args 0
Len 0069 Aml 00000000625f8645
                  \_SB.PR07._PSD Method       0000000096791eaa 2D2 Args 0
Len 0069 Aml 000000007f62d735
                  \_SB.PR08._PSD Method       000000007d3facc1 2D2 Args 0
Len 0069 Aml 0000000039d69b35
                  \_SB.PR09._PSD Method       000000000108e70c 2D2 Args 0
Len 0069 Aml 000000002331e30a
                  \_SB.PR10._PSD Method       00000000012d9bb5 2D2 Args 0
Len 0069 Aml 0000000036d701c9
                  \_SB.PR11._PSD Method       000000007870aead 2D2 Args 0
Len 0069 Aml 00000000e1062a8a
                  \_SB.PR12._PSD Method       00000000a93d1817 2D2 Args 0
Len 0069 Aml 00000000f1efcfdb
                  \_SB.PR13._PSD Method       000000007cc9152f 2D2 Args 0
Len 0069 Aml 0000000002181b00
                  \_SB.PR14._PSD Method       00000000f091b6ce 2D2 Args 0
Len 0069 Aml 000000002f350a49
                  \_SB.PR15._PSD Method       00000000e161e2ed 2D2 Args 0
Len 0069 Aml 00000000036a7a99

- e _SB.PR00._PSD
Evaluating \_SB.PR00._PSD
Evaluation of \_SB.PR00._PSD returned object 000000003b93962e, external
buffer length A8
 [Package] Contains 1 Elements:
  [Package] Contains 5 Elements:
   [Integer] = 0000000000000005
   [Integer] = 0000000000000000
   [Integer] = 0000000000000000
   [Integer] = 00000000000000FE
   [Integer] = 000000000000000C

On Mon, Feb 1, 2021 at 7:44 PM Huang, Bryan <bryanhuang at hpe.com> wrote:

> Hi Alex and FWTS members,
>
>
>
> Here is TPE HPE Bryan Huang.
>
> We tried to run the “CPU frequency scaling tests” of FWTS and encountered
> the following issue.
>
>
>
> [image: cid:image005.jpg at 01D6E2BC.FC31F5F0]
>
>
>
> So we used the "Processors are set to SW_ANY." string to search the FWTS
> code.
>
> We find the cpufreq_test_sw_any function to test the item.
>
> The function will set all processor to their lowest speed first, and then
> set all processor to their highest speed.
>
> Finally, the function will set all processor to their lowest speed again.
>
>
>
> It seems that “if ((high_perf > newhigh_perf) && (high_perf - newhigh_perf
> > (high_perf - low_perf)/4) && (high_perf - low_perf > 20))” is satisfied,
> so the variable ok will be set to false.
>
> Do you have any suggestions for the issue?
>
>
>
> Please refer to the following information.
>
>
>
> File location: src\cpu\cpufreq\cpufreq.c
>
>
>
>
>
>
>
>
>
> Thanks.
>
> Best regards,
>
> Bryan
>


-- 
Cheers,
Alex Hung
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