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authorGravatar Rob Landley <rob@landley.net>2006-05-07 19:26:53 +0000
committerGravatar Rob Landley <rob@landley.net>2006-05-07 19:26:53 +0000
commitf8a808426745ee5f4e5cc76ff1fb9c484c315195 (patch)
tree98685847c9ee70e5997466e29db22f8d46b30e36 /scripts
parent9fb272a222c8c25dbd99d7c186f668516d6b3ebe (diff)
downloadbusybox-f8a808426745ee5f4e5cc76ff1fb9c484c315195.tar.gz
busybox-f8a808426745ee5f4e5cc76ff1fb9c484c315195.tar.bz2
Add "make bloatcheck" to run Matt Mackall's bloat-o-meter. Copy an old
busybox_unstripped to busybox_old, build a new version, and "make bloatcheck" to see a detailed breakdown of the size difference.
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/bloat-o-meter60
1 files changed, 60 insertions, 0 deletions
diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
new file mode 100755
index 000000000..af42f8402
--- /dev/null
+++ b/scripts/bloat-o-meter
@@ -0,0 +1,60 @@
+#!/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
+
+if len(sys.argv) != 3:
+ sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
+ sys.exit(-1)
+
+def getsizes(file):
+ sym = {}
+ for l in os.popen("nm --size-sort " + file).readlines():
+ size, type, name = l[:-1].split()
+ if type in "tTdDbB":
+ if name.find(".") != -1: name = "static." + name.split(".")[0]
+ if name in sym: sym[name] += int(size, 16)
+ else :sym[name] = 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 = [], {}
+
+for a in old:
+ if a in new:
+ common[a] = 1
+
+for name in old:
+ if name not in common:
+ remove += 1
+ down += old[name]
+ delta.append((-old[name], name))
+
+for name in new:
+ 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)