Cross-platform Python script for collecting CPU and memory usage

profile_system.py

# Prints % of total CPU and memory used in the system

# Requires psutil. Install with:
# `pip install psutil`
# or something like:
# `dnf install python3-psutil`

# Run with:
# `python3 profile_system.py`
# Ctrl + C to exit

import time
import psutil
import sys

intervalSec = 2

def printStats():
    print ("{}; {}".format(psutil.cpu_percent(interval=None), psutil.virtual_memory().percent))

def printLoop():
    try:
        while True:
            printStats()
            time.sleep(intervalSec)
    except KeyboardInterrupt:
        print ("User exit...", file=sys.stderr)
        sys.exit(0);

if (len(sys.argv) > 1):
    try:
        intervalSec = int(sys.argv[1])
    except ValueError:
        print ("usage: ", sys.argv[0], " <refresh interval in seconds>")
        sys.exit(1)

printLoop()