Root/scripts/bloat-o-meter

Source at commit cdde9cf73945d547acd3e96f9508c79e84ad0bf1 created 9 years 4 months ago.
By Maarten ter Huurne, MMC: JZ4740: Added support for CPU frequency changing
1#!/usr/bin/python
2#
3# Copyright 2004 Matt Mackall <mpm@selenic.com>
4#
5# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
6#
7# This software may be used and distributed according to the terms
8# of the GNU General Public License, incorporated herein by reference.
9
10import sys, os, re
11
12if len(sys.argv) != 3:
13    sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
14    sys.exit(-1)
15
16def getsizes(file):
17    sym = {}
18    for l in os.popen("nm --size-sort " + file).readlines():
19        size, type, name = l[:-1].split()
20        if type in "tTdDbBrR":
21            # strip generated symbols
22            if name[:6] == "__mod_": continue
23            # function names begin with '.' on 64-bit powerpc
24            if "." in name[1:]: name = "static." + name.split(".")[0]
25            sym[name] = sym.get(name, 0) + int(size, 16)
26    return sym
27
28old = getsizes(sys.argv[1])
29new = getsizes(sys.argv[2])
30grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
31delta, common = [], {}
32
33for a in old:
34    if a in new:
35        common[a] = 1
36
37for name in old:
38    if name not in common:
39        remove += 1
40        down += old[name]
41        delta.append((-old[name], name))
42
43for name in new:
44    if name not in common:
45        add += 1
46        up += new[name]
47        delta.append((new[name], name))
48
49for name in common:
50        d = new.get(name, 0) - old.get(name, 0)
51        if d>0: grow, up = grow+1, up+d
52        if d<0: shrink, down = shrink+1, down-d
53        delta.append((d, name))
54
55delta.sort()
56delta.reverse()
57
58print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
59      (add, remove, grow, shrink, up, -down, up-down)
60print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")
61for d, n in delta:
62    if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)
63

Archive Download this file



interactive