Contents of /trunk/mkinitrd-magellan/busybox/scripts/bloat-o-meter
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File size: 1877 byte(s)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File size: 1877 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
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 | if len(sys.argv) != 3: |
13 | sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0]) |
14 | sys.exit(-1) |
15 | |
16 | def 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 | if "." in name: name = "static." + name.split(".")[0] |
22 | sym[name] = sym.get(name, 0) + int(size, 16) |
23 | for l in os.popen("readelf -S " + file).readlines(): |
24 | x = l.split() |
25 | if len(x)<6 or x[1] != ".rodata": continue |
26 | sym[".rodata"] = int(x[5], 16) |
27 | return sym |
28 | |
29 | old = getsizes(sys.argv[1]) |
30 | new = getsizes(sys.argv[2]) |
31 | grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 |
32 | delta, common = [], {} |
33 | |
34 | for a in old: |
35 | if a in new: |
36 | common[a] = 1 |
37 | |
38 | for name in old: |
39 | if name not in common: |
40 | remove += 1 |
41 | down += old[name] |
42 | delta.append((-old[name], name)) |
43 | |
44 | for name in new: |
45 | if name not in common: |
46 | add += 1 |
47 | up += new[name] |
48 | delta.append((new[name], name)) |
49 | |
50 | for name in common: |
51 | d = new.get(name, 0) - old.get(name, 0) |
52 | if d>0: grow, up = grow+1, up+d |
53 | if d<0: shrink, down = shrink+1, down-d |
54 | delta.append((d, name)) |
55 | |
56 | delta.sort() |
57 | delta.reverse() |
58 | |
59 | print "%-48s %7s %7s %+7s" % ("function", "old", "new", "delta") |
60 | for d, n in delta: |
61 | if d: print "%-48s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d) |
62 | print "-"*78 |
63 | total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%sTotal: %s bytes"\ |
64 | % (add, remove, grow, shrink, up, -down, up-down) |
65 | print total % (" "*(80-len(total))) |
Properties
Name | Value |
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svn:executable | * |