client/tools/avgtime

#!/usr/bin/python
import sys, os, re

def avg_deviation(values):
    sum = 0
    count = 0

    if not values:
        return (0, 0)
    for x in values:
        sum += x
        count += 1
    average = sum / count
    sum_sq_dev = 0
    for x in values:
        sum_sq_dev += (x - average) ** 2
    std_dev = (sum_sq_dev / count)**0.5
    return (average, 100 * std_dev / average)


list = []
for line in sys.stdin.readlines():
    (user, system, elapsed, cpu) = line.split()[0:4]
    user = float(re.match(r'([\d\.]+)', user).group(0))
    system = float(re.match(r'([\d\.]+)', system).group(0))
    m = re.match(r'(\d+):([\d\.]+)', elapsed)
    elapsed = 60*int(m.group(1)) + float(m.group(2))
    cpu = int(re.match(r'(\d+)', cpu).group(0))

    list.append((user, system, elapsed, cpu))

print "   user: %0.2fs (%0.2f%%)" % avg_deviation([x[0] for x in list])
print " system: %0.2fs (%0.2f%%)" % avg_deviation([x[1] for x in list])
print "elapsed: %0.2fs (%0.2f%%)" % avg_deviation([x[2] for x in list])
print "    cpu: %d%% (%0.2f%%)" % avg_deviation([x[3] for x in list])