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Linux/tools/thermal/tmon/README

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Diff markup

Differences between /tools/thermal/tmon/README (Architecture ppc) and /tools/thermal/tmon/README (Architecture sparc64)


  1 TMON - A Monitoring and Testing Tool for Linux      1 TMON - A Monitoring and Testing Tool for Linux kernel thermal subsystem
  2                                                     2 
  3 Why TMON?                                           3 Why TMON?
  4 ==========                                          4 ==========
  5 Increasingly, Linux is running on thermally co      5 Increasingly, Linux is running on thermally constrained devices. The simple
  6 thermal relationship between processor and fan      6 thermal relationship between processor and fan has become past for modern
  7 computers.                                          7 computers.
  8                                                     8 
  9 As hardware vendors cope with the thermal cons      9 As hardware vendors cope with the thermal constraints on their products, more
 10 and more sensors are added, new cooling capabi     10 and more sensors are added, new cooling capabilities are introduced. The
 11 complexity of the thermal relationship can gro     11 complexity of the thermal relationship can grow exponentially among cooling
 12 devices, zones, sensors, and trip points. They     12 devices, zones, sensors, and trip points. They can also change dynamically.
 13                                                    13 
 14 To expose such relationship to the userspace,      14 To expose such relationship to the userspace, Linux generic thermal layer
 15 introduced sysfs entry at /sys/class/thermal w     15 introduced sysfs entry at /sys/class/thermal with a matrix of symbolic
 16 links, trip point bindings, and device instanc     16 links, trip point bindings, and device instances. To traverse such
 17 matrix by hand is not a trivial task. Testing      17 matrix by hand is not a trivial task. Testing is also difficult in that
 18 thermal conditions are often exception cases t     18 thermal conditions are often exception cases that hard to reach in
 19 normal operations.                                 19 normal operations.
 20                                                    20 
 21 TMON is conceived as a tool to help visualize,     21 TMON is conceived as a tool to help visualize, tune, and test the
 22 complex thermal subsystem.                         22 complex thermal subsystem.
 23                                                    23 
 24 Files                                              24 Files
 25 =====                                              25 =====
 26         tmon.c : main function for set up and      26         tmon.c : main function for set up and configurations.
 27         tui.c : handles ncurses based user int     27         tui.c : handles ncurses based user interface
 28         sysfs.c : access to the generic therma     28         sysfs.c : access to the generic thermal sysfs
 29         pid.c : a proportional-integral-deriva     29         pid.c : a proportional-integral-derivative (PID) controller
 30         that can be used for thermal relations     30         that can be used for thermal relationship training.
 31                                                    31 
 32 Requirements                                       32 Requirements
 33 ============                                       33 ============
 34 Depends on ncurses                                 34 Depends on ncurses
 35                                                    35 
 36 Build                                              36 Build
 37 =========                                          37 =========
 38 $ make                                             38 $ make
 39 $ sudo ./tmon -h                                   39 $ sudo ./tmon -h
 40 Usage: tmon [OPTION...]                            40 Usage: tmon [OPTION...]
 41   -c, --control         cooling device in cont     41   -c, --control         cooling device in control
 42   -d, --daemon          run as daemon, no TUI      42   -d, --daemon          run as daemon, no TUI
 43   -l, --log             log data to /var/tmp/t     43   -l, --log             log data to /var/tmp/tmon.log
 44   -h, --help            show this help message     44   -h, --help            show this help message
 45   -t, --time-interval   set time interval for      45   -t, --time-interval   set time interval for sampling
 46   -v, --version         show version               46   -v, --version         show version
 47   -g, --debug           debug message in syslo     47   -g, --debug           debug message in syslog
 48                                                    48 
 49 1. For monitoring only:                            49 1. For monitoring only:
 50 $ sudo ./tmon                                      50 $ sudo ./tmon
                                                      

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