In ra màn hình số 1 – ngôn ngữ nào nhẹ nhất?

$ /usr/bin/time bash -c 'echo 1'

1

0.00user 0.00system 0:00.00elapsed 100%CPU (0avgtext+0avgdata 3064maxresident)k

0inputs+0outputs (0major+136minor)pagefaults 0swaps

$ /usr/bin/time /bin/dash -c 'echo 1'
1
0.00user 0.00system 0:00.00elapsed ?%CPU (0avgtext+0avgdata 1492maxresident)k
0inputs+0outputs (0major+67minor)pagefaults 0swaps

$ /usr/bin/time mawk 'BEGIN {print 1}'

1

0.00user 0.00system 0:00.00elapsed 100%CPU (0avgtext+0avgdata 1932maxresident)k

0inputs+0outputs (0major+86minor)pagefaults 0swaps

$ /usr/bin/time gawk 'BEGIN {print 1}'

1

0.00user 0.00system 0:00.00elapsed 42%CPU (0avgtext+0avgdata 3632maxresident)k

552inputs+0outputs (2major+173minor)pagefaults 0swaps

$ /usr/bin/time python3 -c 'print(1)'

1

0.03user 0.01system 0:00.05elapsed 98%CPU (0avgtext+0avgdata 9292maxresident)k

0inputs+0outputs (0major+1100minor)pagefaults 0swaps

$ /usr/bin/time python2 -c 'print(1)'

1

0.01user 0.00system 0:00.01elapsed 94%CPU (0avgtext+0avgdata 6640maxresident)k

0inputs+0outputs (0major+819minor)pagefaults 0swaps

$ /usr/bin/time ruby -e 'puts 1'
1
0.03user 0.01system 0:00.04elapsed 100%CPU (0avgtext+0avgdata 10336maxresident)k
0inputs+0outputs (0major+1595minor)pagefaults 0swaps

$ /usr/bin/time perl -e 'print "1n"'

1

0.00user 0.00system 0:00.00elapsed 100%CPU (0avgtext+0avgdata 4144maxresident)k

0inputs+0outputs (0major+176minor)pagefaults 0swaps

$ /usr/bin/time node -p '1'

1

0.09user 0.00system 0:00.10elapsed 100%CPU (0avgtext+0avgdata 24080maxresident)k

0inputs+0outputs (0major+2920minor)pagefaults 0swaps

$ /usr/bin/time elixir -e 'IO.puts 1'

1

0.17user 0.04system 0:00.16elapsed 137%CPU (0avgtext+0avgdata 29268maxresident)k

16inputs+0outputs (1major+7837minor)pagefaults 0swaps

$ /usr/bin/time guile -c '(display 1) (newline)'

1

0.02user 0.00system 0:00.01elapsed 115%CPU (0avgtext+0avgdata 7720maxresident)k

0inputs+0outputs (0major+976minor)pagefaults 0swaps

$ /usr/bin/time printf '1'

10.00user 0.00system 0:00.00elapsed 100%CPU (0avgtext+0avgdata 1844maxresident)k

0inputs+0outputs (0major+72minor)pagefaults 0swaps

import shlex
import subprocess


programs = {
    'bash': 'bash -c "echo 1"',
    'dash': 'dash -c "echo 1"',
    'mawk': "mawk 'BEGIN {print 1}'",
    'gawk': "gawk 'BEGIN {print 1}'",
    'python2.7': 'python2 -c "print(1)"',
    'python3.5': 'python3 -c "print(1)"',
    'ruby2.3': 'ruby -e "puts 1"',
    'node6': 'node -p 1',
    'perl5': "perl -e "print '1n'"",
    'elixir': 'elixir -e "IO.puts 1"',
    'guile': 'guile -c "(display 1) (newline)"',
    'printf': 'printf "1n"'
}


import re

def get_rss_from_stderr(stderr):
    match = re.compile('(?P<rss>d+)maxresident').search(err.decode('utf-8'))
    return int(match.group('rss'))


import pandas as pd

languages = []
rsses = []
for language, cmd in programs.items():
    cmd = ['/usr/bin/time'] + shlex.split(cmd)
    process = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    out, err = process.communicate()
    assert out.decode('utf-8') == '1n'
    rss = get_rss_from_stderr(err)
    print(language, rss)
    languages.append(language)
    rsses.append(rss)

df = pd.DataFrame(index=languages, data=rsses, columns=['RSS'])

df_sorted_rss = df.sort_values(by='RSS')

# run in Jupyter
from matplotlib import pyplot as plt
import matplotlib
matplotlib.style.use('fivethirtyeight')

%matplotlib inline
df_sorted_rss.plot.bar(title='RSS size in byte when print 1');