| #!/usr/bin/python |
| # |
| # Copyright 2004 Matt Mackall <mpm@selenic.com> |
| # |
| # inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen |
| # |
| # This software may be used and distributed according to the terms |
| # of the GNU General Public License, incorporated herein by reference. |
| |
| import sys, os, re |
| from signal import signal, SIGPIPE, SIG_DFL |
| |
| signal(SIGPIPE, SIG_DFL) |
| |
| if len(sys.argv) != 3: |
| sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0]) |
| sys.exit(-1) |
| |
| re_NUMBER = re.compile(r'\.[0-9]+') |
| |
| def getsizes(file): |
| sym = {} |
| with os.popen("nm --size-sort " + file) as f: |
| for line in f: |
| size, type, name = line.split() |
| if type in "tTdDbBrR": |
| # strip generated symbols |
| if name.startswith("__mod_"): continue |
| if name.startswith("SyS_"): continue |
| if name.startswith("compat_SyS_"): continue |
| if name == "linux_banner": continue |
| # statics and some other optimizations adds random .NUMBER |
| name = re_NUMBER.sub('', name) |
| sym[name] = sym.get(name, 0) + int(size, 16) |
| return sym |
| |
| old = getsizes(sys.argv[1]) |
| new = getsizes(sys.argv[2]) |
| grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 |
| delta, common = [], {} |
| otot, ntot = 0, 0 |
| |
| for a in old: |
| if a in new: |
| common[a] = 1 |
| |
| for name in old: |
| otot += old[name] |
| if name not in common: |
| remove += 1 |
| down += old[name] |
| delta.append((-old[name], name)) |
| |
| for name in new: |
| ntot += new[name] |
| if name not in common: |
| add += 1 |
| up += new[name] |
| delta.append((new[name], name)) |
| |
| for name in common: |
| d = new.get(name, 0) - old.get(name, 0) |
| if d>0: grow, up = grow+1, up+d |
| if d<0: shrink, down = shrink+1, down-d |
| delta.append((d, name)) |
| |
| delta.sort() |
| delta.reverse() |
| |
| print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ |
| (add, remove, grow, shrink, up, -down, up-down)) |
| print("%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")) |
| for d, n in delta: |
| if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)) |
| |
| print("Total: Before=%d, After=%d, chg %+.2f%%" % \ |
| (otot, ntot, (ntot - otot)*100.0/otot)) |