Contents of /tags/mkinitrd-6_2_1/busybox/scripts/bloat-o-meter
Parent Directory | Revision Log
Revision 999 -
(show annotations)
(download)
Sun May 30 12:16:23 2010 UTC (14 years, 4 months ago) by niro
File size: 2266 byte(s)
Sun May 30 12:16:23 2010 UTC (14 years, 4 months ago) by niro
File size: 2266 byte(s)
tagged 'mkinitrd-6_2_1'
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 | |
10 | import sys, os, re |
11 | |
12 | def usage(): |
13 | sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0]) |
14 | sys.exit(-1) |
15 | |
16 | if len(sys.argv) < 3: |
17 | usage() |
18 | |
19 | for f in sys.argv[1:3]: |
20 | if not os.path.exists(f): |
21 | sys.stderr.write("Error: file '%s' does not exist\n" % f) |
22 | usage() |
23 | |
24 | nm_args = " ".join(sys.argv[3:]) |
25 | def getsizes(file): |
26 | sym = {} |
27 | for l in os.popen("nm --size-sort %s %s" % (nm_args, file)).readlines(): |
28 | l = l.strip() |
29 | # Skip empty lines |
30 | if not len(l): continue |
31 | # Skip archive members |
32 | if len(l.split()) == 1 and l.endswith(':'): |
33 | continue |
34 | size, type, name = l.split() |
35 | if type in "tTdDbBrR": |
36 | if "." in name: name = "static." + name.split(".")[0] |
37 | sym[name] = sym.get(name, 0) + int(size, 16) |
38 | for l in os.popen("readelf -S " + file).readlines(): |
39 | x = l.split() |
40 | if len(x)<6 or x[1] != ".rodata": continue |
41 | sym[".rodata"] = int(x[5], 16) |
42 | return sym |
43 | |
44 | old = getsizes(sys.argv[1]) |
45 | new = getsizes(sys.argv[2]) |
46 | grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 |
47 | delta, common = [], {} |
48 | |
49 | for a in old: |
50 | if a in new: |
51 | common[a] = 1 |
52 | |
53 | for name in old: |
54 | if name not in common: |
55 | remove += 1 |
56 | down += old[name] |
57 | delta.append((-old[name], name)) |
58 | |
59 | for name in new: |
60 | if name not in common: |
61 | add += 1 |
62 | up += new[name] |
63 | delta.append((new[name], name)) |
64 | |
65 | for name in common: |
66 | d = new.get(name, 0) - old.get(name, 0) |
67 | if d>0: grow, up = grow+1, up+d |
68 | if d<0: shrink, down = shrink+1, down-d |
69 | delta.append((d, name)) |
70 | |
71 | delta.sort() |
72 | delta.reverse() |
73 | |
74 | print "%-48s %7s %7s %+7s" % ("function", "old", "new", "delta") |
75 | for d, n in delta: |
76 | if d: print "%-48s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d) |
77 | print "-"*78 |
78 | total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%sTotal: %s bytes"\ |
79 | % (add, remove, grow, shrink, up, -down, up-down) |
80 | print total % (" "*(80-len(total))) |
Properties
Name | Value |
---|---|
svn:executable | * |