How to get current CPU, GPU and RAM usage of a particular program in Python?

Question

I have written a python program to detect faces of a video input (webcam) using Haar Cascade. I would like to know how much CPU, GPU and RAM are being utilized by this specific program and not the overall CPU, GPU, RAM usage.

I came across psutil package (https://pypi.org/project/psutil/) which enables to profile system resources being used but I could not manage to get system resources being used by a specific program. How can I achieve that?

I have also seen this How to get current CPU and RAM usage in Python? but its not what I want.

My python code as follows:

def main():
    #Get current Process ID
    pid = os.getpid()
    #Get resources used by current process
    p = psutil.Process(pid)
    with p.oneshot():
        cpu_percent = p.cpu_percent()
        # Get Memory and GPU usage of this PID as well

What OS is this on? Have you checked out the per-process information psutil gives you? — Martijn Pieters
– Martijn Pieters, Commented Jun 17, 2018 at 15:00
I am using MacOS at the moment but will be importing the program to Linux on an embedded system. — TheCoder
– TheCoder, Commented Jun 17, 2018 at 15:03
Getting GPU utilisation info on Linux is entirely tied to per-vendor command-line tools, psutil has no support for this. The rest is available via psutil.Process. — Martijn Pieters
– Martijn Pieters, Commented Jun 17, 2018 at 15:07
A good place to start is probably 26.4. The Python Profilers in the manual. — jww
– jww, Commented Jun 17, 2018 at 15:16
You could find the PID and look in activity monitor since you're on mac — whackamadoodle3000
– whackamadoodle3000, Commented Jun 17, 2018 at 15:22

Giampaolo Rodolà · Accepted Answer · 2018-06-19 15:19:56Z

1

You can get CPU/RAM metrics (not GPU) for a particular process given its PID:

import psutil
psutil.Process(1234).cpu_percent()
psutil.Process(1234).memory_info()

answered Jun 19, 2018 at 15:19

Giampaolo Rodolà

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