acpi-cpufreq
, since this is a zen 1 cpu amd-pstate is not supported, so there are 3 available freqs (cpupower frequency-info): P0= 2700MHz, P1= 1900MHz, P2= 1200MHzcpupower idle-info
)advanced -> amd cbs -> NBIO -> cTDP
to Manual and cTDP value from 5 to 20 did not reduce power consuption in my tests. I didn't see other BIOS settings that could help decrease power usage, other than turning off cpu cores (didn't try).amdctl -g -m
:Core 0 | P-State Limits (non-turbo): Highest: 0 ; Lowest 2 | Current P-State: 0
Pstate Status CpuFid CpuDid CpuVid CpuMult CpuFreq CpuVolt IddVal IddDiv CpuCurr CpuPower
0 1 108 8 96 27.00x 2700.00MHz 950mV 27 10 37.00A 35.15W
1 1 95 10 104 19.00x 1900.00MHz 900mV 19 10 29.00A 26.10W
2 1 96 16 108 12.00x 1200.00MHz 875mV 12 10 22.00A 19.25W
root@homeserver:~# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 43 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Vendor ID: AuthenticAMD
Model name: AMD EPYC 3151 4-Core Processor
CPU family: 23
Model: 1
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
Stepping: 2
Frequency boost: enabled
CPU max MHz: 2700.0000
CPU min MHz: 1200.0000
BogoMIPS: 5400.32
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 moni
tor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm
cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ski
nit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pst
ate ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt s
ha_ni xsaveopt xsavec xgetbv1 clzero irperf xsaveerptr arat npt lbrv svm_lock n
rip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold
avic v_vmsave_vmload vgif overflow_recov succor smca sme sev sev_es
Virtualization features:
Virtualization: AMD-V
Caches (sum of all):
L1d: 128 KiB (4 instances)
L1i: 256 KiB (4 instances)
L2: 2 MiB (4 instances)
L3: 16 MiB (2 instances)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-3
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Not affected
Retbleed: Mitigation; untrained return thunk; SMT disabled
Spec rstack overflow: Mitigation; SMT disabled
Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Spectre v2: Mitigation; Retpolines, IBPB conditional, STIBP disabled, RSB filling, PBRSB-eI
BRS Not affected
Srbds: Not affected
Tsx async abort: Not affected
BIOS -> Advanced Tab -> AMD CBS -> Zen Common Options -> Core/thread Enablement -> Agree -> SMTEN -> AUTO
.That's were I got that info from.It´s an excellent question for the other SlimSAS Port. I never thought about it as i already saw it´s SATA Ports in BIOS and i didn´t know that you can use it for PCIe. But if you have a look at the MJ11-EC0(!) Version from Gigabyte it states that there is PCIe on this port too.
MJ11-EC0 (rev. 1.2) | Server Motherboard - GIGABYTE Germany
Single AMD EPYC™ Embedded 3151Dual Channel RDIMM/UDIMM DDR4 , 4 x DIMMs2 x 1Gb/s LAN ports via Intel® I210-AT1 x SlimSAS connector for 4 x SATA 6Gb/s4 x SAT...www.gigabyte.com
If your PCIe works on both SFF-8612, but not two in parallel, possibly no PCIe bifurcation. The MJ11-EC0, according to page 40 of the manual, supports this.The u2_2 should be 8 Lanes, as @SadoKitten stated Gigabyte uses an IC on their PCIe distribution board for the 10 x1 Ports. I don´t think they use x4 for upstreaming to 10x x1. Given that i´m highly confident that the board is mostly identical to the MJ11-EC0, where is one PCIe x16 Port instead of the u2_1 (which isn´t soldered and does not show up in the BIOS) and u2_2 ports i think that both of these 8654-8i ports should electrically be x8.
[....]
Yes, i tried both sff-8612 ends, to no avail.