On Tue, 23 Nov 2021 at 11:33, Huang Rui [off-list ref] wrote:

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Hi

Yes I used v4 and CONFIG_CPU_FREQ_GOV_SCHEDUTIL was set as the
default, is there any other info that would be useful, I can switch
back to schedutil from ondemand and collect for you

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That's on a AMD Ryzen 9 5900HX

May I know the CPU family/model id? (you can dump it from lscpu)

But you may need to add "amd_pstate.shared_mem=1" in your grub to enable
the shared memory manually. Because we are debugging the performance issue
on shared memory solution, so it is disabled by default.

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        amd_des_perf = clamp_t(unsigned long, amd_des_perf,

It's not the V4's codes. I renamed this variate in the V4.

Thanks,
Ray

Hmm very strange, can you confirm this download from patchwork (which
is what's applied) is correct or not
https://patchwork.kernel.org/series/582973/mbox/

Architecture:            x86_64
 CPU op-mode(s):        32-bit, 64-bit
 Address sizes:         48 bits physical, 48 bits virtual
 Byte Order:            Little Endian
CPU(s):                  16
 On-line CPU(s) list:   0-15
Vendor ID:               AuthenticAMD
 Model name:            AMD Ryzen 9 5900HX with Radeon Graphics
   CPU family:          25
   Model:               80
   Thread(s) per core:  2
   Core(s) per socket:  8
   Socket(s):           1
   Stepping:            0
   Frequency boost:     enabled
   CPU max MHz:         4890.0000
   CPU min MHz:         400.0000
   BogoMIPS:            6587.55
   Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep
mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx
mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl
nonstop_tsc
                        cpuid extd_apicid aperfmperf rapl pni
pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave
avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a
misaligns
                        se 3dnowprefetch osvw ibs skinit wdt tce
topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3
cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2
smep bm
                        i2 erms invpcid cqm rdt_a rdseed adx
clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc
cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr
rdpru wbnoinvd cppc
                         arat npt lbrv svm_lock nrip_save tsc_scale
vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic
v_vmsave_vmload vgif v_spec_ctrl umip pku vaes vpclmulqdq rdpid
overflow_re
                        cov succor smca fsrm
Virtualization features:
 Virtualization:        AMD-V
Caches (sum of all):
 L1d:                   256 KiB (8 instances)
 L1i:                   256 KiB (8 instances)
 L2:                    4 MiB (8 instances)
 L3:                    16 MiB (1 instance)
Vulnerabilities:
 Itlb multihit:         Not affected
 L1tf:                  Not affected
 Mds:                   Not affected
 Meltdown:              Not affected
 Spec store bypass:     Mitigation; Speculative Store Bypass disabled via prctl
 Spectre v1:            Mitigation; usercopy/swapgs barriers and
__user pointer sanitization
 Spectre v2:            Mitigation; Full AMD retpoline, IBPB
conditional, IBRS_FW, STIBP always-on, RSB filling
 Srbds:                 Not affected
 Tsx async abort:       Not affected