Kontron coolMonster/PM, Руководство пользователя

Страница: 51 / 90

23 22BImportant Technology Information
Kontron User's Guide
coolMonster/PM
51
233B
Active Trip Point
Active cooling devices typically consume power and produce noise but are able to cool a thermal zone
without limiting system performance. The active cooling trip point declares the temperature threshold
OS uses to start/stop active cooling devices (fan).
234B
Passive Cooling Trip Point
Passive cooling devices produce no noise, but may not be effective enough to cool the thermal zone. The
passive cooling trip point declares the temperature threshold in which the OS will start or stop passive
cooling. In this case it throttles the processor.
235B
Critical Trip Point
The OS performs an orderly, but critical, shutdown of the system when the temperature reaches the
critical trip point.
236B
Processor Clock Throttling
The ACPI OS assesses the optimum CPU performance change necessary to lower the temperature using
the following equation:
Δ
P[%] = TC1(Tn-Tn-1) + TC2(Tn-Tt)
Δ
P is the performance delta, Tt is the target temperature = critical trip point. The two coefficients TC1
and TC2 and the sampling period TSP are hardware dependent constants that you must supply. (See the
setup options in the ACPI Control Submenu section in the BIOS Operation chapter).
It is up to you to set the cooling preference of the system by setting the appropriate trip points in the
BIOS setup.
Notes: For more detailed information see Chapter 12 of the ACPI Specification.