Temperature rise and memory of the jetson nano after long use

[yerayb]

Hi, I'm using jetson stats in a python script. The python script has a while that constantly sends Jetson values to a DB. The problem is that after a few hours, the ram, cpu and temperature increase considerably. What can I do to stop this from happening?

`

def datos_mensaje():
configuracion_aws=leer_parametros_configuración()

with jtop() as jetson:
    payload = {
        "Timestamp" : str(datetime.now()), #Fecha y hora actual 
        "Maquina": configuracion_aws['cliente_jetson'],
        "CPU1": str(jetson.cpu['CPU1']['val']) ,
        "CPU2": str(jetson.cpu['CPU2']['val']) ,
        "CPU3": str(jetson.cpu['CPU3']['val']) ,
        "CPU4": str(jetson.cpu['CPU4']['val']) ,
        "GPU": str(jetson.gpu['val']),
        "RAMconsum": str(jetson.ram['use']) ,
        "RAMtotal": str(jetson.ram['tot']) ,
        "Temp PPl": str(jetson.temperature['PLL']) ,
        "Temp CPU": str(jetson.temperature['CPU']) ,
        "Temp GPU": str(jetson.temperature['GPU']) ,
        "Thermal": str(jetson.temperature['thermal']) ,
        "Temp AO": str(jetson.temperature['AO']) 
      }

return json.dumps(payload) #Convierte string a JSON`

I call this function from the main with a while True with a time.sleep of 30 seconds.

Thanks

[rbonghi]

Hi @yerayb ,

Thank you for open this issue :-)

I notice that you forget to use jetson.ok() this blocking function unlock the rest of the function only when a new data is available, avoiding long loop when it is send the same data.

Try this option:

with jtop() as jetson:
  while jetson.ok():
    payload = {
        "Timestamp" : str(datetime.now()), #Fecha y hora actual 
        "Maquina": configuracion_aws['cliente_jetson'],
        "CPU1": str(jetson.cpu['CPU1']['val']) ,
        "CPU2": str(jetson.cpu['CPU2']['val']) ,
        "CPU3": str(jetson.cpu['CPU3']['val']) ,
        "CPU4": str(jetson.cpu['CPU4']['val']) ,
        "GPU": str(jetson.gpu['val']),
        "RAMconsum": str(jetson.ram['use']) ,
        "RAMtotal": str(jetson.ram['tot']) ,
        "Temp PPl": str(jetson.temperature['PLL']) ,
        "Temp CPU": str(jetson.temperature['CPU']) ,
        "Temp GPU": str(jetson.temperature['GPU']) ,
        "Thermal": str(jetson.temperature['thermal']) ,
        "Temp AO": str(jetson.temperature['AO']) 
      }
      return json.dumps(payload)

If you are running this script from another function, I suggest to setup in another way:

from jtop import jtop

jetson = jtop()
jetson.start()

def parse_data(jetson):
    ... YOUR PARSING...
    return json.dumps(payload)

while jetson.ok():
    ... YOUR CODE ...
    payload = parse_data(jetson)
    ... YOUR CODE ...

jetson.close()

Last alternative you can use a callback

from jtop import jtop

payload = {}

def read_stats(jetson):
    global payload
    ... YOUR CODE ...
   payload = ...

jetson = jtop()
jetson.attach(read_stats)
jetson.start()

while True:
    ... YOUR CODE ...
    data = json.dumps(payload)
    ... YOUR CODE ...

jetson.close()

Keep me posted if you fixed

[yerayb]

Thank you @rbonghi very much for your response, the last alternative using the callback was the solution I needed. The values are almost not altered and my jetson does not heat up as it used to. Thank you!