Run internet speed test every 20 mins. Log the results and plot

csv headers

/usr/local/bin/speedtest-cli --csv > ~/.speedtest.log.csv

pip

# https://github.com/sivel/speedtest-cli
pip install speedtest-cli

plot.py

#!/usr/bin/env python

import sys
import pandas as pd
import matplotlib.pyplot as plt
import seaborn as sns

sns.set_style("darkgrid")

df = pd.read_csv(sys.stdin, index_col=3, parse_dates=[3, ])
df.loc[:, "Download"] /= 1e6
df.loc[:, "Upload"] /= 1e6

df.plot(y=["Download", "Upload"], figsize=(8, 5))
plt.ylabel("Mbit/s")
plt.savefig("download-upload-speed.png", bbox_inches="tight")
plt.close()

speedtest crontab

0,20,40 * * * * /usr/local/bin/speedtest-cli --csv >> ~/.speedtest.log.csv 2> /dev/null