1TMON(8) System Manager's Manual TMON(8)
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6 tmon - A monitoring and testing tool for Linux kernel thermal subsystem
7
10 tmon [Options]
11
13 tmon can be used to visualize thermal relationship and real-time ther‐
14 mal data; tune and test cooling devices and sensors; collect thermal
15 data for offline analysis and plot. tmon must be run as root in order
16 to control device states via sysfs.
17 Functions
19 1. Thermal relationships:
21 - show thermal zone information
22 - show cooling device information
23 - show trip point binding within each thermal zone
24 - show trip point and cooling device instance bindings
25 2. Real time data display
27 - show temperature of all thermal zones w.r.t. its trip points and types
28 - show states of all cooling devices
29 3. Thermal relationship learning and device tuning
31 - with a built-in Proportional Integral Derivative (PID)
32 controller, user can pair a cooling device to a thermal sensor for
33 testing the effectiveness and learn about the thermal distance between the two
34 - allow manual control of cooling device states and target temperature
35 4. Data logging in /var/tmp/tmon.log
37 - contains thermal configuration data, i.e. cooling device, thermal
38 zones, and trip points. Can be used for data collection in remote
39 debugging.
40 - log real-time thermal data into space separated format that can be
41 directly consumed by plotting tools such as Rscript.
42 Options
45 The -c --control option sets a cooling device type to control tempera‐
46 ture of a thermal zone
47 The -d --daemon option runs tmon as daemon without user interface
49 The -g --debug option allow debug messages to be stored in syslog
51 The -h --help option shows help message
53 The -l --log option write data to /var/tmp/tmon.log
55 The -t --time-interval option sets the polling interval in seconds
57 The -v --version option shows the version of tmon
59 The -z --zone option sets the target therma zone instance to be con‐
61 trolled
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64 P passive cooling trip point type
65 A active cooling trip point type (fan)
66 C critical trip point type
67 A hot trip point type
68 kp proportional gain of PID controller
69 ki integral gain of PID controller
70 kd derivative gain of PID controller
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74 Build depends on ncurses
75 Runtime depends on window size large enough to show the number of
77 devices found on the system.
78
81 Ctrl-C, q/Q stops tmon
82 TAB shows tuning pop up panel, choose a letter to modify
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86 Without any parameters, tmon is in monitoring only mode and refresh
87 screen every 1 second.
88 1. For monitoring only:
90 $ sudo ./tmon
91 2. Use Processor cooling device to control thermal zone 0 at default 65C.
93 $ sudo ./tmon -c Processor -z 0
94 3. Use intel_powerclamp(idle injection) cooling device to control thermal zone 1
96 $ sudo ./tmon -c intel_powerclamp -z 1
97 4. Turn on debug and collect data log at /var/tmp/tmon.log
99 $ sudo ./tmon -g -l
100 For example, the log below shows PID controller was adjusting current states
102 for all cooling devices with "Processor" type such that thermal zone 0
103 can stay below 65 dC.
104 #---------- THERMAL DATA LOG STARTED -----------
106 Samples TargetTemp acpitz0 acpitz1 Fan0 Fan1 Fan2 Fan3 Fan4 Fan5
107 Fan6 Fan7 Fan8 Fan9 Processor10 Processor11 Processor12 Processor13
108 LCD14 intel_powerclamp15 1 65.0 65 65 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0 2
109 65.0 66 65 0 0 0 0 0 0 0 0 0 0 4 4 4 4 6 0 3 65.0 60 54 0 0 0 0 0 0 0 0
110 0 0 4 4 4 4 6 0 4 65.0 53 53 0 0 0 0 0 0 0 0 0 0 4 4 4 4 6 0
111 5 65.0 52 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0
112 6 65.0 53 65 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0
113 7 65.0 68 70 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0
114 8 65.0 68 68 0 0 0 0 0 0 0 0 0 0 5 5 5 5 6 0
115 9 65.0 68 68 0 0 0 0 0 0 0 0 0 0 6 6 6 6 6 0
116 10 65.0 67 67 0 0 0 0 0 0 0 0 0 0 7 7 7 7 6 0
117 11 65.0 67 67 0 0 0 0 0 0 0 0 0 0 8 8 8 8 6 0
118 12 65.0 67 67 0 0 0 0 0 0 0 0 0 0 8 8 8 8 6 0
119 13 65.0 67 67 0 0 0 0 0 0 0 0 0 0 9 9 9 9 6 0
120 14 65.0 66 66 0 0 0 0 0 0 0 0 0 0 10 10 10 10 6 0
121 15 65.0 66 67 0 0 0 0 0 0 0 0 0 0 10 10 10 10 6 0
122 16 65.0 66 66 0 0 0 0 0 0 0 0 0 0 11 11 11 11 6 0
123 17 65.0 66 66 0 0 0 0 0 0 0 0 0 0 11 11 11 11 6 0
124 18 65.0 64 61 0 0 0 0 0 0 0 0 0 0 11 11 11 11 6 0
125 19 65.0 60 59 0 0 0 0 0 0 0 0 0 0 12 12 12 12 6 0
126 Data can be read directly into an array by an example R-script below:
128 #!/usr/bin/Rscript
130 tdata <- read.table("/var/tmp/tmon.log", header=T, comment.char="#")
131 attach(tdata)
132 jpeg("tmon.jpg")
133 X11()
134 g_range <- range(0, intel_powerclamp15, TargetTemp, acpitz0)
135 plot( Samples, intel_powerclamp15, col="blue", ylim=g_range, axes=FALSE, ann=FALSE)
136 par(new=TRUE)
137 lines(TargetTemp, type="o", pch=22, lty=2, col="red")
138 dev.off()
139 TMON(8)