client/tools/oprofile_diff

#!/usr/bin/python2
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function

import re
import sys

def parse_file(filename):
    data = {}
    for line in open(filename):
        if re.match('\d', line):
            (samples, percent, symbol) = line.split()
            data[symbol] = float(percent)
    return data


data1 = parse_file(sys.argv[1])
data2 = parse_file(sys.argv[2])

delta = {}
for symbol in list(data1.keys()) + list(data2.keys()):
    delta[symbol] = data1.get(symbol, 0) - data2.get(symbol, 0)

def lookup_delta(symbol):
    return delta[symbol]

sorted_deltas = sorted(list(delta.keys()), key=lookup_delta, reverse=True)

if len(sorted_deltas) > 40:
    sorted_deltas = sorted_deltas[0:20] + sorted_deltas[-20:]

for symbol in sorted_deltas:
    print('%2.3f %s' % (delta[symbol], symbol))