Read CPU data

Example response

{
  "data": {
    "physical_core": 4,
    "logical_core": 8,
    "frequency": 2500,
    "temperature": 50,
    "free_percent": 0.5,
    "usage_percent": 0.5
  },
  "errors": [
    {
      "metric": "cpu.temperature",
      "error": "unable to get cpu temperature"
    }
  ]
}