energy.1 - energy - measure energy usage | |
git clone git://bitreich.org/energy git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws… | |
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energy.1 (871B) | |
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1 .Dd 2023 | |
2 .Dt ENERGY 1 | |
3 .Os | |
4 . | |
5 .Sh NAME | |
6 .Nm energy | |
7 .Nd measure energy usage of command | |
8 . | |
9 .Sh SYNOPSIS | |
10 .Nm | |
11 .Bk -words | |
12 .Ar COMMAND... | |
13 .Ek | |
14 . | |
15 .Sh DESCRIPTION | |
16 .Bd -filled | |
17 .Nm | |
18 shows the energy usage of a command, similarly to how | |
19 .Xr time 1 | |
20 shows the time usage. The energy usage is printed to stderr and | |
21 reported in joules. | |
22 .Nm | |
23 automatically attempts to use whatever sensors are available. | |
24 Battery-based measurements are only used if the battery is | |
25 discharging. | |
26 . | |
27 .Sh BUGS | |
28 Yes. | |
29 .Nm | |
30 depends crucially on hardware counters, and there is no guarantee | |
31 these are an accurate reflection of the actual physical energy usage. | |
32 Apart from plain inaccuracy, the available counters may cover only a | |
33 subset of the hardware available in the system, and may not count the | |
34 energy usage of e.g. graphics cards or storage devices. | |
35 . | |
36 .Sh LICENSE | |
37 This program is released under the GPLv3 or later. |