Missing: hw.acpi.thermal.tz%d._HOT

[hiren panchasara]

On Tue, Jun 10, 2014 at 8:40 AM, Eric Neblock <cen5848 at louisiana.edu> wrote:
> On Wed, 2014-06-11 at 01:33 +1000, Ian Smith wrote:
>> On Tue, 10 Jun 2014 09:54:14 -0500, Eric Neblock wrote:
>>  > Hello all,
>>  >   I'm trying to figure out what is the _HOT temperature on my particular
>>  > processor. I'm running FreeBSD 10 GENERIC on a Sunfire X2200.
>>  >
>>  > The processor is an Dual Core AMD Opteron 2218.
>>  >
>>  > In the GENERIC kernel, acpi is built in; so, kldload acpi fails. I've
>>  > also loaded the amdtemp module at boot time to figure out what the
>>  > current temp of the processor is.
>>  >
>>  > With all of that, when performing `sysctl -a` I never seem to be able to
>>  > pull up the _HOT value.
>>  >
>>  > Are there any suggestions on how to be able to view it?
>>
>> Many thermal zones seen, including some CPUs, don't specify any _HOT
>> value, just _PSV and _CRT, which should trigger passive cooling (eg
>> clock slowing or throttling) and emergency shutdown, respectively.
>>
>> What says 'sysctl hw.acpi.thermal' ?
>>
>> cheers, Ian
>
> The result is as follows:
>
> sysctl: Unknown oid 'hw.acpi.thermal' : No such file or directory

Similar thing here at home desktop running -CURRENT:

CPU: AMD FX(tm)-8350 Eight-Core Processor            (4000.24-MHz K8-class CPU)
  Origin="AuthenticAMD"  Id=0x600f20  Family=0x15  Model=0x2  Stepping=0

acpi0: <7596MS A7596100> on motherboard

Other related bits:

# sysctl hw.acpi
hw.acpi.supported_sleep_state: S3 S4 S5
hw.acpi.power_button_state: S5
hw.acpi.sleep_button_state: S3
hw.acpi.lid_switch_state: NONE
hw.acpi.standby_state: NONE
hw.acpi.suspend_state: S3
hw.acpi.sleep_delay: 1
hw.acpi.s4bios: 0
hw.acpi.verbose: 0
hw.acpi.disable_on_reboot: 0
hw.acpi.handle_reboot: 0
hw.acpi.reset_video: 0
hw.acpi.cpu.cx_lowest: C8
#

# sysctl dev.amdtemp
dev.amdtemp.0.%desc: AMD CPU On-Die Thermal Sensors
dev.amdtemp.0.%driver: amdtemp
dev.amdtemp.0.%parent: hostb4
dev.amdtemp.0.sensor_offset: 0
dev.amdtemp.0.core0.sensor0: 15.3C

# sysctl -a dev.cpu | grep temp
dev.cpu.0.temperature: 15.2C
dev.cpu.1.temperature: 15.2C
dev.cpu.2.temperature: 15.2C
dev.cpu.3.temperature: 15.2C
dev.cpu.4.temperature: 15.2C
dev.cpu.5.temperature: 15.2C
dev.cpu.6.temperature: 15.2C
dev.cpu.7.temperature: 15.2C

I am not sure how this ^ relates to what acpi reports under thermal.

Cheers,
Hiren