Question about cpu_times_percent

[Thiago Andrade]

Hi guys,

I have the following question: When I use the "cpu_times_percent" function to get the nice, iowait, idle value. The values ​​when I run inside python they are returned but when I run inside a .py file for example psutil.cpu_times_percent().user or psutil.cpu_times_percent().idle the values ​​are reset. Does anyone know the reason? 

Exemple:

Inside python:

>>> psutil.cpu_times_percent()

scputimes(user=0.4, nice=0.0, system=0.7, idle=98.9, iowait=0.0, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)

Out of pyhon:

python3.7 test.py 

scputimes(user=0.0, nice=0.0, system=0.0, idle=0.0, iowait=0.0, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)

Thanks!

[Giampaolo Rodola']

Hey there,

from the doc:

<<Warning: the first time this function is called with interval = 0.0 or None it will return a meaningless 0.0 value which you are supposed to ignore.>>

That's because in order to calculate percent you need a time window to compare CPU timings (numbers) between the first and the second call.

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Giampaolo - gmpy.dev