diff options
-rwxr-xr-x | utils/analysis/bloat-o-meter.py | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/utils/analysis/bloat-o-meter.py b/utils/analysis/bloat-o-meter.py new file mode 100755 index 0000000000..311b90cdc3 --- /dev/null +++ b/utils/analysis/bloat-o-meter.py | |||
@@ -0,0 +1,80 @@ | |||
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], sys.argv[2]: | ||
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([x for x in 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)%%s\nTotal: %s bytes"\ | ||
79 | % (add, remove, grow, shrink, up, -down, up-down) | ||
80 | print total % (" "*(80-len(total))) | ||