Scenario: 4.5 on MSI Wind PC, everything works. I use this machine
because it is relatively low-power and quiet.

The fan rotation changes with how much the CPU is used
(could someone translate this into the real thing please?),
without me doing anything about it on the OS level.

Unless I run something heavy, such as launching mozilla, the fan keeps
pretty quiet (below the level of noise that would annoy me), but still,
it could be quiter. Is there a way to control the fan RPM from the OS?
(Unsurprisingly, hw.sensors.adt0.fan0 is readonly.)

                Jan


# dmesg
OpenBSD 4.5-stable (GENERIC.MP) #0: Sun Jun  7 07:28:16 CEST 2009
    [email protected]:/usr/src/sys/arch/i386/compile/GENERIC.MP
cpu0: Intel(R) Atom(TM) CPU 230 @ 1.60GHz ("GenuineIntel" 686-class) 1.60 GHz
cpu0: 
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,TM2,CX16,xTPR
real mem  = 1064660992 (1015MB)
avail mem = 1021157376 (973MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 11/17/08, BIOS32 rev. 0 @ 0xf0010, SMBIOS 
rev. 2.5 @ 0xfbeb0 (31 entries)
bios0: vendor MICRO-STAR INTERNATIONAL CO., LTD version "1.60" date 11/17/2008
bios0: MICRO-STAR INTERNATIONAL CO., LTD MS-7418
acpi0 at bios0: rev 2
acpi0: tables DSDT FACP APIC MCFG OEMB HPET
acpi0: wakeup devices P0P2(S4) P0P1(S4) EUSB(S4) MC97(S4) P0P4(S4) P0P5(S4) 
P0P6(S4) P0P7(S4) P0P8(S4) P0P9(S4) USB0(S1) USB1(S1) USB2(S1) USB3(S1) SLPB(S4)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: apic clock running at 133MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Atom(TM) CPU 230 @ 1.60GHz ("GenuineIntel" 686-class) 1.60 GHz
cpu1: 
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,TM2,CX16,xTPR
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 1, remapped to apid 2
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (P0P4)
acpiprt2 at acpi0: bus 2 (P0P5)
acpiprt3 at acpi0: bus 3 (P0P6)
acpiprt4 at acpi0: bus 4 (P0P7)
acpiprt5 at acpi0: bus -1 (P0P8)
acpiprt6 at acpi0: bus -1 (P0P9)
acpicpu0 at acpi0
acpicpu1 at acpi0
acpibtn0 at acpi0: SLPB
acpibtn1 at acpi0: PWRB
bios0: ROM list: 0xc0000/0xae00! 0xcb000/0x1000
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82945G Host" rev 0x02
vga1 at pci0 dev 2 function 0 "Intel 82945G Video" rev 0x02
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
intagp0 at vga1
agp0 at intagp0: aperture at 0xe0000000, size 0x10000000
inteldrm0 at vga1: apic 2 int 16 (irq 10)
drm0 at inteldrm0
azalia0 at pci0 dev 27 function 0 "Intel 82801GB HD Audio" rev 0x01: apic 2 int 
16 (irq 10)
azalia0: codecs: Realtek ALC888
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x01: apic 2 int 16 
(irq 10)
pci1 at ppb0 bus 1
re0 at pci1 dev 0 function 0 "Realtek 8168" rev 0x02: RTL8168C/8111C (0x3c00), 
apic 2 int 16 (irq 10), address 00:24:21:5a:a8:95
rgephy0 at re0 phy 7: RTL8169S/8110S PHY, rev. 2
ppb1 at pci0 dev 28 function 1 "Intel 82801GB PCIE" rev 0x01: apic 2 int 17 
(irq 11)
pci2 at ppb1 bus 2
ppb2 at pci0 dev 28 function 2 "Intel 82801GB PCIE" rev 0x01: apic 2 int 18 
(irq 12)
pci3 at ppb2 bus 3
ppb3 at pci0 dev 28 function 3 "Intel 82801GB PCIE" rev 0x01: apic 2 int 19 
(irq 5)
pci4 at ppb3 bus 4
uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x01: apic 2 int 23 
(irq 3)
uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x01: apic 2 int 19 
(irq 5)
uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x01: apic 2 int 18 
(irq 12)
uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x01: apic 2 int 16 
(irq 10)
ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x01: apic 2 int 23 
(irq 3)
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb4 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xe1
pci5 at ppb4 bus 5
ichpcib0 at pci0 dev 31 function 0 "Intel 82801GB LPC" rev 0x01: PM disabled
pciide0 at pci0 dev 31 function 1 "Intel 82801GB IDE" rev 0x01: DMA, channel 0 
configured to compatibility, channel 1 configured to compatibility
wd0 at pciide0 channel 0 drive 0: <ELITE PRO CF CARD 8GB>
wd0: 1-sector PIO, LBA, 7647MB, 15662304 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
pciide0: channel 1 disabled (no drives)
pciide1 at pci0 dev 31 function 2 "Intel 82801GB SATA" rev 0x01: DMA, channel 0 
configured to native-PCI, channel 1 configured to native-PCI
pciide1: using apic 2 int 19 (irq 5) for native-PCI interrupt
wd1 at pciide1 channel 0 drive 0: <SAMSUNG HD502HI>
wd1: 16-sector PIO, LBA48, 476940MB, 976773168 sectors
wd1(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 5
ichiic0 at pci0 dev 31 function 3 "Intel 82801GB SMBus" rev 0x01: apic 2 int 19 
(irq 5)
iic0 at ichiic0
adt0 at iic0 addr 0x2e: adt7467 rev 0x71
spdmem0 at iic0 addr 0x50: 1GB DDR2 SDRAM non-parity PC2-4200CL3 SO-DIMM
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb4 at uhci3: USB revision 1.0
uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at ichpcib0
isadma0 at isa0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
mtrr: Pentium Pro MTRR support
umass0 at uhub0 port 5 configuration 1 interface 0 "Prolific Technology Inc. 
Mass Storage Device" rev 2.00/1.00 addr 2
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, initiator 0
sd0 at scsibus0 targ 1 lun 0: <ST980815, A, 3.AL> SCSI0 0/direct fixed
sd0: 76319MB, 512 bytes/sec, 156301488 sec total
umass1 at uhub0 port 6 configuration 1 interface 0 "Generic USB2.0-CRW" rev 
2.00/58.88 addr 3
umass1: using SCSI over Bulk-Only
scsibus1 at umass1: 2 targets, initiator 0
sd1 at scsibus1 targ 1 lun 0: <Generic-, Multi-Card, 1.00> SCSI0 0/direct 
removable
sd1: 15MB, 512 bytes/sec, 31360 sec total
uhidev0 at uhub1 port 1 configuration 1 interface 0 "Chicony USB Keyboard" rev 
1.10/1.02 addr 2
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 modifier keys, 6 key codes
wskbd0 at ukbd0 mux 1
wskbd0: connecting to wsdisplay0
uhidev1 at uhub1 port 1 configuration 1 interface 1 "Chicony USB Keyboard" rev 
1.10/1.02 addr 2
uhidev1: iclass 3/0, 3 report ids
uhid0 at uhidev1 reportid 1: input=1, output=0, feature=0
uhid1 at uhidev1 reportid 2: input=1, output=0, feature=2
uhid2 at uhidev1 reportid 3: input=3, output=0, feature=0
uhidev2 at uhub1 port 2 configuration 1 interface 0 "Genius Optical Mouse" rev 
1.10/1.00 addr 3
uhidev2: iclass 3/1
ums0 at uhidev2: 3 buttons, Z dir
wsmouse0 at ums0 mux 0
root device softraid not configured
root on wd0a swap on wd0b dump on wd0b

# sysctl hw
hw.machine=i386
hw.model=Intel(R) Atom(TM) CPU 230 @ 1.60GHz ("GenuineIntel" 686-class)
hw.ncpu=2
hw.byteorder=1234
hw.pagesize=4096
hw.disknames=wd0,wd1,sd0,sd1
hw.diskcount=4
hw.sensors.cpu0.temp0=57.00 degC
hw.sensors.adt0.temp0=49.00 degC (Remote)
hw.sensors.adt0.temp1=40.00 degC (Internal)
hw.sensors.adt0.fan0=2773 RPM
hw.sensors.adt0.volt0=0.00 VDC (+2.5Vin)
hw.sensors.adt0.volt1=1.17 VDC (Vccp)
hw.sensors.adt0.volt2=3.32 VDC (Vcc)
hw.sensors.adt0.volt3=0.00 VDC (+5V)
hw.sensors.adt0.volt4=0.00 VDC (+12V)
hw.cpuspeed=1597
hw.setperf=100
hw.vendor=MICRO-STAR INTERNATIONAL CO., LTD
hw.product=MS-7418
hw.serialno=123456789
hw.uuid=00020003-0004-0005-0006-000700080009
hw.physmem=1064660992
hw.usermem=1064583168

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