toys/linux_mem_statistic/draw.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import sys
import os
import matplotlib.pyplot as plt


if __name__ == '__main__':
    if len(sys.argv) < 2:
        print("Please provide a log file.")
        sys.exit(0)

    ts = []
    ms = []
    for line in open(sys.argv[1]):
        t, m = line.strip().split(',')
        ts.append(int(t))
        ms.append(int(m))

    ts = [x - ts[0] for x in ts]

    plt.title("Memory Usage")
    plt.xlabel("Time(ms)")
    plt.ylabel("Memory(KB)")
    plt.plot(ts, ms, '-.', label="Memory Usage")
    plt.legend()
    plt.grid()
    plt.show()