Merge branch 'odb'

Conflicts:
	lib/git/cmd.py

1 files changed, 59 insertions, 0 deletions

diff --git a/test/git/performance/test_utils.py b/test/git/performance/test_utils.py
new file mode 100644
index 00000000..76adffec
--- /dev/null
+++ b/test/git/performance/test_utils.py
@@ -0,0 +1,59 @@
+"""Performance of utilities"""
+from time import time
+import sys
+import stat
+
+from lib import (
+	TestBigRepoR
+	)
+
+
+class TestUtilPerformance(TestBigRepoR):
+	
+	def test_access(self):
+		# compare dict vs. slot access
+		class Slotty(object):
+			__slots__ = "attr"
+			def __init__(self):
+				self.attr = 1
+				
+		class Dicty(object):
+			def __init__(self):
+				self.attr = 1
+				
+		class BigSlotty(object):
+			__slots__ = ('attr', ) + tuple('abcdefghijk')
+			def __init__(self):
+				for attr in self.__slots__:
+					setattr(self, attr, 1)
+					
+		class BigDicty(object):
+			def __init__(self):
+				for attr in BigSlotty.__slots__:
+					setattr(self, attr, 1)
+		
+		ni = 1000000
+		for cls in (Slotty, Dicty, BigSlotty, BigDicty):
+			cli = cls()
+			st = time()
+			for i in xrange(ni):
+				cli.attr
+			# END for each access
+			elapsed = time() - st
+			print >> sys.stderr, "Accessed %s.attr %i times in %s s ( %f acc / s)" % (cls.__name__, ni, elapsed, ni / elapsed)
+		# END for each class type
+		
+		# check num of sequence-acceses
+		for cls in (list, tuple):
+			x = 10
+			st = time()
+			s = cls(range(x))
+			for i in xrange(ni):
+				s[0]
+				s[1]
+				s[2]
+			# END for
+			elapsed = time() - st
+			na = ni * 3
+			print >> sys.stderr, "Accessed %s[x] %i times in %s s ( %f acc / s)" % (cls.__name__, na, elapsed, na / elapsed)
+		# END for each sequence