40COL
%c%Available RAPL Readings

* PACKAGE_ENERGY: total energy used 
  by entire package

* PP0_ENERGY: energy used by 
  'Power Plane 0' which includes 
  all cores and caches

* PP1_ENERGY: on original Sandybridge
  this includes the on-chip Intel GPU

* DRAM_ENERGY: on Sandybridge EP this 
  measures DRAM energy usage.  
  It is unclear whether this is just 
  the interface or if it includes all 
  power used by all the DIMMs too
