pytime.py

import sys
import psutil
import subprocess
import datetime
import time

bashScriptPath = sys.argv[1]
stdoutPath, stderrPath = sys.argv[2:] or (None, None)

peakRssBytes = 0
timeRealStart = datetime.datetime.utcnow()

p = subprocess.Popen(['bash', bashScriptPath], stdout = open(stdoutPath, 'w') if stdoutPath else subprocess.STDOUT, stderr = open(stderrPath, 'w') if stderrPath else subprocess.STDERR)
pp = psutil.Process(p.pid)
while True:
    returnCode = p.poll()
    if returnCode != None:
        break

    peakRssBytes = max(peakRssBytes, pp.get_memory_info()[0])
    for childProc in pp.get_children(recursive = True):
        peakRssBytes = max(peakRssBytes, childProc.get_memory_info()[0])

    time.sleep(0.1)

timeReal = datetime.datetime.utcnow() - timeRealStart
print 'timeReal\t%s' % timeReal
print 'returnCode\t%s' % returnCode
print 'peakRssMegaBytes\t%.2f' % (peakRssBytes / 1024.0 / 1024.0)