sysfs RAPL

1] intel_rapl_msr

$ lsmod | grep rapl
intel_rapl_msr         16384  0
intel_rapl_common      24576  1 intel_rapl_msr
rapl                   20480  0

Intel (single socket)

$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:0/name 
package-0
$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:0\:0/name 
dram
$ cat /sys/devices/virtual/powercap/intel-rapl/intel-rapl\:0/intel-rapl\:0\:0/name 
dram

AMD (dual socket)

$ ls /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl
intel-rapl/     intel-rapl:0/   intel-rapl:0:0/ intel-rapl:1/   intel-rapl:1:0/ 
$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:0\:0/name 
core
$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:1\:0/name 
core
$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:1/name 
package-1
$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:0/name 
package-0
$ ls /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:0/
device/              enabled              energy_uj            intel-rapl:0:0/      
max_energy_range_uj  name                 power/               subsystem/           uevent               
$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:0/energy_uj 
22137546463
$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:0/max_energy_range_uj 
65532610987
$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:0\:0/energy_uj 
61787210181
$ cat /sys/devices/virtual/powercap/intel-rapl/subsystem/intel-rapl\:0\:0/max_energy_range_uj 
65532610987

2] amd_energy

$ lsmod | grep energy
amd_energy             16384  0
$ cat /sys/class/hwmon/hwmon8/name 
amd_energy
$ ls -l /sys/class/hwmon/hwmon8/
total 0
lrwxrwxrwx 1 root root    0 Oct 14 07:37 device -> ../../../amd_energy.0
-r--r----- 1 root root 4096 Oct 14 07:37 energy10_input
-r--r----- 1 root root 4096 Oct 14 07:37 energy10_label
-r--r----- 1 root root 4096 Oct 14 07:37 energy11_input
-r--r----- 1 root root 4096 Oct 14 07:37 energy11_label
-r--r----- 1 root root 4096 Oct 14 07:37 energy12_input
...

#75 (closed) #38 #53