plot.py

# python3 plot.py 22760.csv

import matplotlib.pyplot as plt
import csv
import sys
x = []
y1 = []
y2 = []


with open(sys.argv[1],'r') as csvfile:
    plots = csv.reader(csvfile, delimiter=',')
    next(plots)
    i = 0
    startTime = 0
    for row in plots:
        if i==0:
            startTime = float(row[0])
            i+=1
        x.append(float(row[0]) - startTime)
        y1.append(float(row[3]))
        y2.append(float(row[4]))

fig, ax1 = plt.subplots()
ax2 = ax1.twinx()

color = 'tab:red'
ax1.set_xlabel('Time(sec)')
ax1.set_ylabel('cpu(%)', color=color)
ax1.tick_params(axis='y', labelcolor=color)
ax1.plot(x,y1, color=color)

color = 'tab:blue'
ax2.set_ylabel('Memory(MB)', color=color) 
ax2.tick_params(axis='y', labelcolor=color)
ax2.plot(x,y2)

fig.tight_layout()
plt.show()

record.py

#python3
# python3 main.py  22760

import os
import subprocess
import sys
import time
import psutil

def memory_usage_ps(pid):
    import subprocess
    out = subprocess.Popen(['ps', 'v', '-p', str(pid)],
    stdout=subprocess.PIPE).communicate()[0].split(b'\n')
    vsz_index = out[0].split().index(b'RSS')
    mem = float(out[1].split()[vsz_index]) / 1024
    return mem


if __name__ == "__main__":    
    pid = sys.argv[1]
    print('monitoring pid ' + str(pid))    
    f = open(pid + ".csv", "w")
    f.write('nowtime, totalCpu, totalMem, pidCpu, pidMem, pidName\n')
    while True:
        # totalCpu = subprocess.check_output('grep \'cpu \' /proc/stat | awk \'{usage=($2+$4)*100/($2+$4+$5)} END {print usage}\'', shell=True).rstrip()
        # totalCpu = totalCpu.decode("utf-8")
        totalCpu = psutil.cpu_percent(0.1)

        vMem = psutil.virtual_memory()[2]
        command='top -bn 1 -p ' + str(pid)
        topResult = subprocess.check_output(command, shell=True).decode("utf-8")
        lastLine = topResult.splitlines()[-1].split()        
        pidCpu = lastLine[-4]
        # pidMem = lastLine[-3]
        pidMem = memory_usage_ps(int(pid))
        print(pidMem)

        # pidName = lastLine[-1]        
        nowtime = "%.3f" % time.time()        
        summaryStr = '{},{},{},{},{}'.format(nowtime, totalCpu, vMem, pidCpu, pidMem)        
        f.write(summaryStr+'\n')
        #print(summaryStr)
        time.sleep(0.1)
    f.close()