summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--Makefile5
-rwxr-xr-xscripts/bloat-o-meter60
2 files changed, 65 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 974048f..a16a98c 100644
--- a/Makefile
+++ b/Makefile
@@ -132,6 +132,8 @@ help:
@echo ' uninstall'
@echo
@echo 'Development:'
+ @echo ' bloatcheck - show size difference between busybox_unstripped'
+ @echo ' and busybox_old
@echo ' check - run the test suite for all applets'
@echo ' checkhelp - check for missing help-entries in Config.in'
@echo ' randconfig - generate a random configuration'
@@ -358,6 +360,9 @@ checkhelp:
.PHONY: sizes
sizes: busybox_unstripped
$(NM) --size-sort $(<)
+.PHONY: bloatcheck
+bloatcheck: busybox_old busybox_unstripped
+ @scripts/bloat-o-meter busybox_old busybox_unstripped
.PHONY: objsizes
objsizes: busybox_unstripped
diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
new file mode 100755
index 0000000..af42f84
--- /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)