Hi Ron,

I am running this on my RPI4B -
dmesg below, the difference being

	-"firmware" at simplebus0 not configured
	+rpicpu0 at simplebus0: 600-1500 MHz

This is what sysctl hw says:

hw.machine=arm64
hw.model=ARM Cortex-A72 r0p3
hw.ncpu=4
hw.byteorder=1234
hw.pagesize=4096
hw.disknames=sd0:a33e6029ac9d8f70
hw.diskcount=1
hw.sensors.bcmtmon0.temp0=53.07 degC
hw.cpuspeed=1500
hw.setperf=100
hw.vendor=raspberrypi
hw.product=Raspberry Pi 4 Model B Rev 1.4
hw.serialno=10000000690ec9eb
hw.uuid=31303030-3030-3030-3639-306563396500
hw.physmem=8441495552
hw.usermem=8441491456
hw.ncpufound=4
hw.allowpowerdown=1
hw.perfpolicy=high
hw.smt=0
hw.ncpuonline=4
hw.power=1
hw.ucomnames=

So with hw.setperf=100 it runs at 1500.
As a naive test, I recompiled the same kernel:

before:	34m45.95s real   108m28.41s user    19m37.55s system
after:	19m25.87s real    59m24.15s user    10m21.18s system

> just obeys whatever level cpu_setperf feeds it.

$ doas sysctl hw.setperf=0                          
doas (hans@rpi.stare.cz) password: 
sysctl: hw.setperf: Operation not permitted

Is that supposed to work?
After starting apmd -A, I can do this:

rpi# apm -L
rpi# apm
Battery state: unknown, 0% remaining, unknown life estimate
AC adapter state: not known
Performance adjustment mode: manual (600 MHz)

rpi# apm -H    
rpi# apm
Battery state: unknown, 0% remaining, unknown life estimate
AC adapter state: not known
Performance adjustment mode: manual (1500 MHz)

rpi# apm -A
rpi# apm
Battery state: unknown, 0% remaining, unknown life estimate
AC adapter state: not known
Performance adjustment mode: auto (1500 MHz)

> Remember to unset force_turbo.

Does that go into the config.txt file in the DOS partition?
Looking at
https://www.raspberrypi.com/documentation/computers/config_txt.html#overclocking-options
does force_turbo=1 force the RPI4 to always run with max frequency?
I don't have any force_turbo in the config.txt file.

	Thank you

		Jan



OpenBSD 7.8-current (GENERIC.MP) #0: Sat Jan 10 21:59:50 CET 2026
    hans@rpi.stare.cz:/usr/src/sys/arch/arm64/compile/GENERIC.MP
real mem  = 8441495552 (8050MB)
avail mem = 8139554816 (7762MB)
random: good seed from bootblocks
mainbus0 at root: Raspberry Pi 4 Model B Rev 1.4
efi0 at mainbus0: UEFI 2.11
efi0: Das U-Boot rev 0x20250700
smbios0 at efi0: SMBIOS 3.7.0
smbios0: vendor U-Boot version "2025.07" date 07/01/2025
smbios0: raspberrypi Raspberry Pi 4 Model B Rev 1.4
cpu0 at mainbus0 mpidr 0: ARM Cortex-A72 r0p3
cpu0: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu0: 1024KB 64b/line 16-way L2 cache
cpu0: CRC32,ASID16
cpu1 at mainbus0 mpidr 1: ARM Cortex-A72 r0p3
cpu1: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu1: 1024KB 64b/line 16-way L2 cache
cpu2 at mainbus0 mpidr 2: ARM Cortex-A72 r0p3
cpu2: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu2: 1024KB 64b/line 16-way L2 cache
cpu3 at mainbus0 mpidr 3: ARM Cortex-A72 r0p3
cpu3: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu3: 1024KB 64b/line 16-way L2 cache
"linux,cma" at mainbus0 not configured
"nvram" at mainbus0 not configured
apm0 at mainbus0
"system" at mainbus0 not configured
"axi" at mainbus0 not configured
simplebus0 at mainbus0: "soc"
bcmclock0 at simplebus0
bcmmbox0 at simplebus0
bcmgpio0 at simplebus0
bcmaux0 at simplebus0
ampintc0 at simplebus0 nirq 256, ncpu 4 ipi 0: "interrupt-controller"
bcmtmon0 at simplebus0
bcmdmac0 at simplebus0: DMA0 DMA2 DMA4 DMA5 DMA6 DMA7 DMA8 DMA9 DMA10
pluart0 at simplebus0: rev 3, 32 byte fifo
pluart0: console
"interrupt-controller" at simplebus0 not configured
bcmdog0 at simplebus0
bcmirng0 at simplebus0
rpicpu0 at simplebus0: 600-1500 MHz
"power" at simplebus0 not configured
"mailbox" at simplebus0 not configured
sdhc0 at simplebus0
sdhc0: SDHC 3.00, 250 MHz base clock
sdmmc0 at sdhc0: 4-bit, sd high-speed, mmc high-speed
"gpiomem" at simplebus0 not configured
"fb" at simplebus0 not configured
simplebus1 at simplebus0: "nvmem"
"nvmem_otp" at simplebus1 not configured
"nvmem_cust" at simplebus1 not configured
"nvmem_priv" at simplebus1 not configured
simplebus2 at mainbus0: "clocks"
"clk-osc" at simplebus2 not configured
"clk-usb" at simplebus2 not configured
"phy" at mainbus0 not configured
"clk-27M" at mainbus0 not configured
"clk-108M" at mainbus0 not configured
simplebus3 at mainbus0: "emmc2bus"
sdhc1 at simplebus3
sdhc1: SDHC 3.00, 100 MHz base clock
sdmmc1 at sdhc1: 8-bit, sd high-speed, mmc high-speed, ddr52, dma
"pmu" at mainbus0 not configured
agtimer0 at mainbus0: 54000 kHz
simplebus4 at mainbus0: "scb"
bcmpcie0 at simplebus4
pci0 at bcmpcie0
ppb0 at pci0 dev 0 function 0 "Broadcom BCM2711" rev 0x10
pci1 at ppb0 bus 1
xhci0 at pci1 dev 0 function 0 "VIA VL805 xHCI" rev 0x01: intx, xHCI 1.0
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "VIA xHCI root hub" rev 3.00/1.00 addr 1
bse0 at simplebus4: address dc:a6:32:e0:50:d3
brgphy0 at bse0 phy 1: BCM54210E, rev. 2
"codec" at simplebus4 not configured
"dma" at simplebus4 not configured
gpioleds0 at mainbus0: "ACT", "PWR"
"cam_dummy_reg" at mainbus0 not configured
"regulator-cam1" at mainbus0 not configured
"regulator-sd-io-1v8" at mainbus0 not configured
"regulator-sd-vcc" at mainbus0 not configured
"fixedregulator_3v3" at mainbus0 not configured
"fixedregulator_5v0" at mainbus0 not configured
"zone_dma" at mainbus0 not configured
simplebus5 at mainbus0: "v3dbus"
scsibus0 at sdmmc1: 2 targets, initiator 0
sd0 at scsibus0 targ 1 lun 0: <Sandisk, SE32G, 0080> removable
sd0: 30436MB, 512 bytes/sector, 62333952 sectors
uhub1 at uhub0 port 1 configuration 1 interface 0 "VIA Labs USB2.0 Hub" rev 2.10/4.21 addr 2
bwfm0 at sdmmc0 function 1
manufacturer 0x02d0, product 0xa9a6 at sdmmc0 function 2 not configured
manufacturer 0x02d0, product 0xa9a6 at sdmmc0 function 3 not configured
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on sd0a (a33e6029ac9d8f70.a) swap on sd0b dump on sd0b
WARNING: CHECK AND RESET THE DATE!
gpio0 at bcmgpio0: 58 pins
bwfm0: address dc:a6:32:e0:50:d4