Include results for a 2n3 run of the benchmark suite.

pep-0447.txt

@@ -259,6 +259,100 @@ I've seen difference in "minimum time" vary from -0.1% to +1.5%, with simular
 	(this=pep447.pybench, other=default.pybench)
 
 
+A run of the benchmark suite (with option "-b 2n3") also seems to indicate that
+the performance impact is minimal::
+
+	Report on Linux fangorn.local 2.6.32-358.114.1.openstack.el6.x86_64 #1 SMP Wed Jul 3 02:11:25 EDT 2013 x86_64 x86_64
+	Total CPU cores: 8
+
+	### call_method_slots ###
+	Min: 0.304120 -> 0.282791: 1.08x faster
+	Avg: 0.304394 -> 0.282906: 1.08x faster
+	Significant (t=2329.92)
+	Stddev: 0.00016 -> 0.00004: 4.1814x smaller
+
+	### call_simple ###
+	Min: 0.249268 -> 0.221175: 1.13x faster
+	Avg: 0.249789 -> 0.221387: 1.13x faster
+	Significant (t=2770.11)
+	Stddev: 0.00012 -> 0.00013: 1.1101x larger
+
+	### django_v2 ###
+	Min: 0.632590 -> 0.601519: 1.05x faster
+	Avg: 0.635085 -> 0.602653: 1.05x faster
+	Significant (t=321.32)
+	Stddev: 0.00087 -> 0.00051: 1.6933x smaller
+
+	### fannkuch ###
+	Min: 1.033181 -> 0.999779: 1.03x faster
+	Avg: 1.036457 -> 1.001840: 1.03x faster
+	Significant (t=260.31)
+	Stddev: 0.00113 -> 0.00070: 1.6112x smaller
+
+	### go ###
+	Min: 0.526714 -> 0.544428: 1.03x slower
+	Avg: 0.529649 -> 0.547626: 1.03x slower
+	Significant (t=-93.32)
+	Stddev: 0.00136 -> 0.00136: 1.0028x smaller
+
+	### iterative_count ###
+	Min: 0.109748 -> 0.116513: 1.06x slower
+	Avg: 0.109816 -> 0.117202: 1.07x slower
+	Significant (t=-357.08)
+	Stddev: 0.00008 -> 0.00019: 2.3664x larger
+
+	### json_dump_v2 ###
+	Min: 2.554462 -> 2.609141: 1.02x slower
+	Avg: 2.564472 -> 2.620013: 1.02x slower
+	Significant (t=-76.93)
+	Stddev: 0.00538 -> 0.00481: 1.1194x smaller
+
+	### meteor_contest ###
+	Min: 0.196336 -> 0.191925: 1.02x faster
+	Avg: 0.196878 -> 0.192698: 1.02x faster
+	Significant (t=61.86)
+	Stddev: 0.00053 -> 0.00041: 1.2925x smaller
+
+	### nbody ###
+	Min: 0.228039 -> 0.235551: 1.03x slower
+	Avg: 0.228857 -> 0.236052: 1.03x slower
+	Significant (t=-54.15)
+	Stddev: 0.00130 -> 0.00029: 4.4810x smaller
+
+	### pathlib ###
+	Min: 0.108501 -> 0.105339: 1.03x faster
+	Avg: 0.109084 -> 0.105619: 1.03x faster
+	Significant (t=311.08)
+	Stddev: 0.00022 -> 0.00011: 1.9314x smaller
+
+	### regex_effbot ###
+	Min: 0.057905 -> 0.056447: 1.03x faster
+	Avg: 0.058055 -> 0.056760: 1.02x faster
+	Significant (t=79.22)
+	Stddev: 0.00006 -> 0.00015: 2.7741x larger
+
+	### silent_logging ###
+	Min: 0.070810 -> 0.072436: 1.02x slower
+	Avg: 0.070899 -> 0.072609: 1.02x slower
+	Significant (t=-191.59)
+	Stddev: 0.00004 -> 0.00008: 2.2640x larger
+
+	### spectral_norm ###
+	Min: 0.290255 -> 0.299286: 1.03x slower
+	Avg: 0.290335 -> 0.299541: 1.03x slower
+	Significant (t=-572.10)
+	Stddev: 0.00005 -> 0.00015: 2.8547x larger
+
+	### threaded_count ###
+	Min: 0.107215 -> 0.115206: 1.07x slower
+	Avg: 0.107488 -> 0.115996: 1.08x slower
+	Significant (t=-109.39)
+	Stddev: 0.00016 -> 0.00076: 4.8665x larger
+
+	The following not significant results are hidden, use -v to show them:
+	call_method, call_method_unknown, chaos, fastpickle, fastunpickle, float, formatted_logging, hexiom2, json_load, normal_startup, nqueens, pidigits, raytrace, regex_compile, regex_v8, richards, simple_logging, startup_nosite, telco, unpack_sequence.
+
+
 Alternative proposals
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