Monday, October 31, 2022

cpu frequency sensors

> > > o Added CPU frequency sensors for each core on CPUs that have
> > > MPERF/APERF support.

This is current/amd64 on an APU2 (dmesg below).
The cpu line says PERF - does that imply MPERF/APEEF support?
The sensors seem enabled:

hw.sensors.cpu0.frequency0=950000000.00 Hz
hw.sensors.cpu1.frequency0=950000000.00 Hz
hw.sensors.cpu2.frequency0=950000000.00 Hz
hw.sensors.cpu3.frequency0=950000000.00 Hz

while apm says

Performance adjustment mode: auto (1000 MHz)

In fact, dmesg says

cpu0: 998 MHz: speeds: 1000 800 600 MHz

Is the 950 expected, and in fact more true than dmesg's 1000?
Or is that a bug in the sensors code? How can I debug this?

Jan


OpenBSD 7.2-current (GENERIC.MP) #822: Fri Oct 28 21:59:48 MDT 2022
deraadt@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 2112425984 (2014MB)
avail mem = 2031046656 (1936MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 3.0 @ 0x7ee92040 (13 entries)
bios0: vendor coreboot version "v4.17.0.2" date 07/28/2022
bios0: PC Engines apu2
acpi0 at bios0: ACPI 6.0
acpi0: sleep states S0 S1 S4 S5
acpi0: tables DSDT FACP SSDT MCFG TPM2 APIC HEST IVRS SSDT SSDT DRTM HPET
acpi0: wakeup devices PBR4(S4) PBR5(S4) PBR6(S4) PBR7(S4) PBR8(S4) UOH1(S3) UOH2(S3) UOH3(S3) UOH4(S3) UOH5(S3) UOH6(S3) XHC0(S4)
acpitimer0 at acpi0: 3579545 Hz, 32 bits
acpimcfg0 at acpi0
acpimcfg0: addr 0xf8000000, bus 0-63
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD GX-412TC SOC, 998.19 MHz, 16-30-01
cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,TOPEXT,DBKP,PERFTSC,PCTRL3,ITSC,BMI1,XSAVEOPT
cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 2-way I-cache, 2MB 64b/line 16-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 99MHz
cpu0: mwait min=64, max=64, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: AMD GX-412TC SOC, 998.24 MHz, 16-30-01
cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,TOPEXT,DBKP,PERFTSC,PCTRL3,ITSC,BMI1,XSAVEOPT
cpu1: 32KB 64b/line 8-way D-cache, 32KB 64b/line 2-way I-cache, 2MB 64b/line 16-way L2 cache
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 2 (application processor)
cpu2: AMD GX-412TC SOC, 998.14 MHz, 16-30-01
cpu2: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,TOPEXT,DBKP,PERFTSC,PCTRL3,ITSC,BMI1,XSAVEOPT
cpu2: 32KB 64b/line 8-way D-cache, 32KB 64b/line 2-way I-cache, 2MB 64b/line 16-way L2 cache
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 3 (application processor)
cpu3: AMD GX-412TC SOC, 998.14 MHz, 16-30-01
cpu3: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,TOPEXT,DBKP,PERFTSC,PCTRL3,ITSC,BMI1,XSAVEOPT
cpu3: 32KB 64b/line 8-way D-cache, 32KB 64b/line 2-way I-cache, 2MB 64b/line 16-way L2 cache
cpu3: smt 0, core 3, package 0
ioapic0 at mainbus0: apid 4 pa 0xfec00000, version 21, 24 pins
ioapic1 at mainbus0: apid 5 pa 0xfec20000, version 21, 32 pins
acpihpet0 at acpi0: 14318180 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (PBR4)
acpiprt2 at acpi0: bus 1 (PBR5)
acpiprt3 at acpi0: bus -1 (PBR6)
acpiprt4 at acpi0: bus 2 (PBR7)
acpiprt5 at acpi0: bus -1 (PBR8)
acpicpu0 at acpi0: C2(0@400 io@0x1771), C1(@1 halt!), PSS
acpicpu1 at acpi0: C2(0@400 io@0x1771), C1(@1 halt!), PSS
acpicpu2 at acpi0: C2(0@400 io@0x1771), C1(@1 halt!), PSS
acpicpu3 at acpi0: C2(0@400 io@0x1771), C1(@1 halt!), PSS
acpicpu4 at acpi0: no cpu matching ACPI ID 4
acpicpu5 at acpi0: no cpu matching ACPI ID 5
acpicpu6 at acpi0: no cpu matching ACPI ID 6
acpicpu7 at acpi0: no cpu matching ACPI ID 7
acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
acpicmos0 at acpi0
com0 at acpi0 COM1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo
com0: console
com1 at acpi0 COM2 addr 0x2f8/0x8 irq 3: ns16550a, 16 byte fifo
amdgpio0 at acpi0 GPIO uid 0 addr 0xfed81500/0x300 irq 7, 184 pins
"PRP0001" at acpi0 not configured
"PRP0001" at acpi0 not configured
"PRP0001" at acpi0 not configured
"PRP0001" at acpi0 not configured
"PRP0001" at acpi0 not configured
"PRP0001" at acpi0 not configured
"BOOT0000" at acpi0 not configured
acpitz0 at acpi0: critical temperature is 115 degC
cpu0: 998 MHz: speeds: 1000 800 600 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "AMD 16h Root Complex" rev 0x00
vendor "AMD", unknown product 0x1567 (class system subclass IOMMU, rev 0x00) at pci0 dev 0 function 2 not configured
pchb1 at pci0 dev 2 function 0 "AMD 16h Host" rev 0x00
ppb0 at pci0 dev 2 function 2 "AMD 16h PCIE" rev 0x00: msi
pci1 at ppb0 bus 1
em0 at pci1 dev 0 function 0 "Intel I211" rev 0x03: msi, address 00:0d:b9:5e:24:00
ppb1 at pci0 dev 2 function 4 "AMD 16h PCIE" rev 0x00: msi
pci2 at ppb1 bus 2
em1 at pci2 dev 0 function 0 "Intel I211" rev 0x03: msi, address 00:0d:b9:5e:24:01
ccp0 at pci0 dev 8 function 0 "AMD 16h Crypto" rev 0x00
xhci0 at pci0 dev 16 function 0 "AMD Bolton xHCI" rev 0x11: msi, xHCI 1.0
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "AMD xHCI root hub" rev 3.00/1.00 addr 1
ahci0 at pci0 dev 17 function 0 "AMD Hudson-2 SATA" rev 0x40: apic 4 int 19, AHCI 1.3
ahci0: port 0: 6.0Gb/s
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, YMTC JGS, U033> t10.ATA_YMTC_JGS_2201060101982_
sd0: 114473MB, 512 bytes/sector, 234441648 sectors, thin
ehci0 at pci0 dev 19 function 0 "AMD Hudson-2 USB2" rev 0x39: apic 4 int 18
usb1 at ehci0: USB revision 2.0
uhub1 at usb1 configuration 1 interface 0 "AMD EHCI root hub" rev 2.00/1.00 addr 1
piixpm0 at pci0 dev 20 function 0 "AMD Hudson-2 SMBus" rev 0x42: SMI
iic0 at piixpm0
iic1 at piixpm0
iic1: addr 0x4c 3e=00 48=00 4a=00 4e=00 fc=00 fe=00 words 00=ffff 01=ffff 02=ffff 03=ffff 04=ffff 05=ffff 06=ffff 07=ffff
pcib0 at pci0 dev 20 function 3 "AMD Hudson-2 LPC" rev 0x11
sdhc0 at pci0 dev 20 function 7 "AMD Bolton SD/MMC" rev 0x01: apic 4 int 16
sdhc0: SDHC 3.0, 200 MHz base clock
sdmmc0 at sdhc0: 8-bit, sd high-speed, mmc high-speed, dma
pchb2 at pci0 dev 24 function 0 "AMD 16h Link Cfg" rev 0x00
pchb3 at pci0 dev 24 function 1 "AMD 16h Address Map" rev 0x00
pchb4 at pci0 dev 24 function 2 "AMD 16h DRAM Cfg" rev 0x00
km0 at pci0 dev 24 function 3 "AMD 16h Misc Cfg" rev 0x00
pchb5 at pci0 dev 24 function 4 "AMD 16h CPU Power" rev 0x00
pchb6 at pci0 dev 24 function 5 "AMD 16h Misc Cfg" rev 0x00
isa0 at pcib0
isadma0 at isa0
com2 at isa0 port 0x3e8/8 irq 5: ns16550a, 16 byte fifo
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
intr_establish: pic ioapic0 pin 7: can't share type 3 with 2
wbsio0 at isa0 port 0x2e/2: NCT5104D rev 0x53
vmm0 at mainbus0: SVM/RVI
scsibus2 at sdmmc0: 2 targets, initiator 0
sd1 at scsibus2 targ 1 lun 0: <SD/MMC, SD32G, 0061> removable
sd1: 29512MB, 512 bytes/sector, 60440576 sectors
uhub2 at uhub1 port 1 configuration 1 interface 0 "Advanced Micro Devices Hub" rev 2.00/0.18 addr 2
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd1a (935d4b4c539cee8a.a) swap on sd1b dump on sd1b

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