Running scaphandre_linux returns "0 W"

[ionutbalosin]

Please see below the full details.

$ scaphandre_linux_amd64 -s powercap_rapl stdout

Scaphandre stdout exporter
Sending ⚡ metrics
Measurement step is: 2s
Host:	0 W
	package 	core		uncore
Top 5 consumers:
Power		PID	Exe
No processes found yet or filter returns no value.
------------------------------------------------------------

Host:	0 W
	package 	core		uncore
Top 5 consumers:
Power		PID	Exe
0 W	2599	"gnome-shell"
0 W	4704	"gnome-terminal-"
0 W	796	"systemd-oomd"
0 W	3612	"Xwayland"
0 W	1	"systemd"
------------------------------------------------------------

Host:	0 W
	package 	core		uncore
Top 5 consumers:
Power		PID	Exe
0 W	2599	"gnome-shell"
0 W	848	"dbus-daemon"
0 W	1116	"containerd"
0 W	4704	"gnome-terminal-"
0 W	1	"systemd"
------------------------------------------------------------
...

$ powercap-info -p intel-rapl

enabled: 1
Zone 0
  name: package-0
  enabled: 1
  max_energy_range_uj: 262143328850
  Constraint 0
    name: long_term
    power_limit_uw: 200000000
    time_window_us: 31981568
    max_power_uw: 55000000
  Constraint 1
    name: short_term
    power_limit_uw: 30000000
    time_window_us: 2440
    max_power_uw: 0
  Constraint 2
    name: peak_power
    power_limit_uw: 246000000
    max_power_uw: 0
  Zone 0:0
    name: core
    enabled: 0
    max_energy_range_uj: 262143328850
    Constraint 0
      name: long_term
      power_limit_uw: 0
      time_window_us: 976
  Zone 0:1
    name: uncore
    enabled: 0
    max_energy_range_uj: 262143328850
    Constraint 0
      name: long_term
      power_limit_uw: 0
      time_window_us: 976
Zone 1
  name: psys
  enabled: 1
  max_energy_range_uj: 262143328850
  Constraint 0
    name: long_term
    power_limit_uw: 280000000
    time_window_us: 999424
  Constraint 1
    name: short_term
    power_limit_uw: 280000000
    time_window_us: 976

$ cat /proc/cpuinfo

model		: 183
model name	: 13th Gen Intel(R) Core(TM) i9-13900HX

$ uname -a
Linux ubuntu 6.5.0-14-generic #14-Ubuntu SMP PREEMPT_DYNAMIC Tue Nov 14 14:59:49 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Is this not supported on my CPU?

Thanks
Ionut Balosin

[jnioche]

Same here on Linux Mint running on

model name : 12th Gen Intel(R) Core(TM) i7-12700H

[jnioche]

Version 1.0 gives a useful error message

scaphandre::sensors: Could'nt read record from /sys/class/powercap/intel-rapl:0/energy_uj, error was: Os { code: 13, kind: PermissionDenied, message: "Permission denied" }

Changing the rights with sudo chmod -R a+r /sys/class/powercap/intel-rapl fixed the issue
See mlco2/codecarbon#244

@bpetit I will check the README and docs later on + submit a PR to add the instructions if missing

edit - I can see now that the init.sh script exists for that very purpose and that its use is documented both in sensor-powercap_rapl.md and troubleshooting.md

@ionutbalosin can you please check whether calling init.sh fixes the issue for you?