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