Commit d960600df3ce3588571e2c1adf1f5f6d8ca9eb5a
Committed by
Linus Torvalds
Linus Torvalds
1 parent
e701e85b9f
Exists in
master
and in
39 other branches
[PATCH] tiny: Add bloat-o-meter to scripts
This is a rewrite of Andi Kleen's bloat-o-meter with sorting and reporting of gainers/decliners. Sample output: add/remove: 0/8 grow/shrink: 2/0 up/down: 88/-4424 (-4336) function old new delta __copy_to_user_ll 59 103 +44 __copy_from_user_ll 59 103 +44 fill_note 32 - -32 maydump 58 - -58 dump_seek 67 - -67 writenote 180 - -180 elf_dump_thread_status 274 - -274 fill_psinfo 308 - -308 fill_prstatus 466 - -466 elf_core_dump 3039 - -3039 The summary line says: no functions added, 8 removed two functions grew, none shrunk we gained 88 bytes and lost 4424 (or -4336 net) This work was sponsored in part by CE Linux Forum Signed-off-by: Matt Mackall <mpm@selenic.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Showing 1 changed file with 58 additions and 0 deletions Side-by-side Diff
scripts/bloat-o-meter
| 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 "tTdDbB": | |
| 21 | + sym[name] = int(size, 16) | |
| 22 | + return sym | |
| 23 | + | |
| 24 | +old = getsizes(sys.argv[1]) | |
| 25 | +new = getsizes(sys.argv[2]) | |
| 26 | +grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 | |
| 27 | +delta, common = [], {} | |
| 28 | + | |
| 29 | +for a in old: | |
| 30 | + if a in new: | |
| 31 | + common[a] = 1 | |
| 32 | + | |
| 33 | +for name in old: | |
| 34 | + if name not in common: | |
| 35 | + remove += 1 | |
| 36 | + down += old[name] | |
| 37 | + delta.append((-old[name], name)) | |
| 38 | + | |
| 39 | +for name in new: | |
| 40 | + if name not in common: | |
| 41 | + add += 1 | |
| 42 | + up += new[name] | |
| 43 | + delta.append((new[name], name)) | |
| 44 | + | |
| 45 | +for name in common: | |
| 46 | + d = new.get(name, 0) - old.get(name, 0) | |
| 47 | + if d>0: grow, up = grow+1, up+d | |
| 48 | + if d<0: shrink, down = shrink+1, down-d | |
| 49 | + delta.append((d, name)) | |
| 50 | + | |
| 51 | +delta.sort() | |
| 52 | +delta.reverse() | |
| 53 | + | |
| 54 | +print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ | |
| 55 | + (add, remove, grow, shrink, up, -down, up-down) | |
| 56 | +print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta") | |
| 57 | +for d, n in delta: | |
| 58 | + if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d) |