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.startswith("__mod_"): continue 23 if name.startswith("SyS_"): continue 24 if name.startswith("compat_SyS_"): continue 25 if name == "linux_banner": continue 26 # statics and some other optimizations adds random .NUMBER 27 name = re.sub(r'\.[0-9]+', '', name) 28 sym[name] = sym.get(name, 0) + int(size, 16) 29 return sym 30 31old = getsizes(sys.argv[1]) 32new = getsizes(sys.argv[2]) 33grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 34delta, common = [], {} 35otot, ntot = 0, 0 36 37for a in old: 38 if a in new: 39 common[a] = 1 40 41for name in old: 42 otot += old[name] 43 if name not in common: 44 remove += 1 45 down += old[name] 46 delta.append((-old[name], name)) 47 48for name in new: 49 ntot += new[name] 50 if name not in common: 51 add += 1 52 up += new[name] 53 delta.append((new[name], name)) 54 55for name in common: 56 d = new.get(name, 0) - old.get(name, 0) 57 if d>0: grow, up = grow+1, up+d 58 if d<0: shrink, down = shrink+1, down-d 59 delta.append((d, name)) 60 61delta.sort() 62delta.reverse() 63 64print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ 65 (add, remove, grow, shrink, up, -down, up-down)) 66print("%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")) 67for d, n in delta: 68 if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)) 69 70print("Total: Before=%d, After=%d, chg %f%%" % \ 71 (otot, ntot, (ntot - otot)*100/otot)) 72