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