01-07-2013
If this server is in a temperature controlled room, all the cooling fans and psu fans are working and the vents aren't clogged with dust there should be no reason why you'd have temperature problems.
If one of the above isn't true, I'd address that before I started to look for a software solution to something that's a hardware problem.
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LEARN ABOUT DEBIAN
acpi_thermal
ACPI_THERMAL(4) BSD Kernel Interfaces Manual ACPI_THERMAL(4)
NAME
acpi_thermal -- ACPI thermal management subsystem
SYNOPSIS
device acpi
DESCRIPTION
The acpi_thermal driver provides the thermal management features of the ACPI module. This driver has a sysctl(8) interface and a devd(8)
notification interface. The sysctls export properties of each ACPI thermal zone object.
There can be multiple thermal zones in a system. For example, each CPU and the enclosure could all be separate thermal zones, each with its
own setpoints and cooling devices. Thermal zones are numbered sequentially in the order they appear in the AML.
The acpi_thermal driver also activates the active cooling system according to each thermal zone's setpoints.
SYSCTL VARIABLES
hw.acpi.thermal.min_runtime
Number of seconds to continue active cooling once started. A new active cooling level will not be selected until this interval
expires.
hw.acpi.thermal.polling_rate
Number of seconds between polling the current temperature.
hw.acpi.thermal.user_override
If set to 1, allow user override of various setpoints (below). The original values for these settings are obtained from the BIOS and
system overheating and possible damage could occur if changed. Default is 0 (no override).
hw.acpi.thermal.tz%d.active
Current active cooling system state. If this is non-negative, the appropriate _AC%d object is running. Set this value to the
desired active cooling level to force the corresponding fan object to the appropriate level.
hw.acpi.thermal.tz%d.passive_cooling
If set to 1, passive cooling is enabled. It does cooling without fans using cpufreq(4) as the mechanism for controlling CPU speed.
Default is enabled for tz0 where it is available.
hw.acpi.thermal.tz%d.thermal_flags
Current thermal zone status. These are bit-masked values.
hw.acpi.thermal.tz%d.temperature
Current temperature for this zone.
hw.acpi.thermal.tz%d._PSV
Temperature to start passive cooling by throttling down CPU, etc. This value can be overridden by the user.
hw.acpi.thermal.tz%d._HOT
Temperature to start critical suspend to disk (S4). This value can be overridden by the user.
hw.acpi.thermal.tz%d._CRT
Temperature to start critical shutdown (S5). This value can be overridden by the user.
hw.acpi.thermal.tz%d._ACx
Temperatures at which to switch to the corresponding active cooling level. The lower the _ACx value, the higher the cooling power.
All temperatures are printed in Celsius. Values can be set in Celsius (by providing a trailing "C") or Kelvin (by leaving off any trailing
letter). When setting a value by sysctl(8), do not specify a trailing decimal (i.e., 90C instead of 90.0C).
NOTIFIES
Notifies are passed to userland via devd(8). See /etc/devd.conf and devd.conf(5) for examples. The acpi_thermal driver sends events with
the following attributes:
system ACPI
subsystem Thermal
type The fully qualified thermal zone object path as in the ASL.
notify An integer designating the event:
0x80 Current temperature has changed.
0x81 One or more trip points (_ACx, _PSV) have changed.
0x82 One or more device lists (_ALx, _PSL, _TZD) have changed.
0xcc Non-standard notify that the system will shutdown if the temperature stays above _CRT or _HOT for one more poll cycle.
SEE ALSO
acpi(4), cpufreq(4), acpidump(8)
AUTHORS
Michael Smith
This manual page was written by Takanori Watanabe.
BSD
March 17, 2007 BSD