energygraph

Graphs the power use of a host inside a text terminal, using intel-rapl data from the /sys filesystem.

Because the plot ticks at 1 sample per second, you can either read the values as power (Joules per second, or Watt) or as an absolute energy value (Joules.)

Building

$ make

Running

$ sudo ./energygraph

Interpreting

See the legend: top level zones are reported in capitals.

sub-zones have the same colour hue as parent.

Zone domains:

• psys: Platform.
• package-N: A CPU.
• core: On CPU package. Cores of a CPU.
• uncore: On CPU package, but not a core. Typically a gpu.
• dram: Memory.

Compatibility

Known to work on AMD as well.

Requires /sys/devices/virtual/powercap/intel-rapl/ entries.

Requires root privileges.

Copyright

Copyright 2022 by Bram Stolk, licensed using the MIT Open Source License.