1tzmon(7d)                           Devices                          tzmon(7d)
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NAME

6       tzmon - ACPI Thermal Zone Monitor
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DESCRIPTION

9       The  tzmon is a pseudo driver that serves as an ACPI thermal zone moni‐
10       tor. Thermal zones are logical regions  within a  computer  system  for
11       which  ACPI  performs temperature monitoring and control functions. The
12       number of thermal zones on a system with ACPI support varies. For exam‐
13       ple,  some systems may have one or more thermal zones, while others may
14       have none. See the Advanced Configuration and Power Interface  Specifi‐
15       cation, (ACPI) Version 3.0A. for more details.
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18       The  tzmon handles thermal Zone events from ACPI and polls the tempera‐
19       ture for each zone exposed  by the ACPI  implementation.  If  threshold
20       temperatures are reached, tzmon takes appropriate action.  For example,
21       if the temperature is sufficiently high  and  the  ACPI  implementation
22       supports it, tzmon initiates system shutdown.
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25       Note that by default,  system temperature control functions are usually
26       performed by the BIOS and may supersede tzmon functions,  depending  on
27       the  BIOS  implementation.  Also,  many  ACPI implementations expose no
28       thermal zones and in these cases, tzmon performs no functions.
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ATTRIBUTES

31       See attributes(5) for descriptions of the following attributes:
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36       ┌─────────────────────────────┬─────────────────────────────┐
37       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
38       ├─────────────────────────────┼─────────────────────────────┤
39       │Availability                 │SUNWckr                      │
40       ├─────────────────────────────┼─────────────────────────────┤
41       │Architecture                 │x86/x64 only                 │
42       ├─────────────────────────────┼─────────────────────────────┤
43       │Interface stability          │Private                      │
44       └─────────────────────────────┴─────────────────────────────┘
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SEE ALSO

47       attributes(5)
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50       Advanced Configuration and Power Interface Specification, (ACPI),  Ver‐
51       sion 3.0A.
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55SunOS 5.11                        31 Oct 2006                        tzmon(7d)
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