Benchmark	before	before2	before3	after	after2	after3	more_microoptimizations	more_microoptimizations2	more_microoptimizations3
2to3	258 ms	261 ms: 1.01x slower	260 ms: 1.01x slower	258 ms: 1.00x slower	not significant	256 ms: 1.01x faster	255 ms: 1.01x faster	256 ms: 1.00x faster	255 ms: 1.01x faster
chameleon	6.34 ms	6.30 ms: 1.01x faster	not significant	6.42 ms: 1.01x slower	6.27 ms: 1.01x faster	6.23 ms: 1.02x faster	6.22 ms: 1.02x faster	6.19 ms: 1.03x faster	6.22 ms: 1.02x faster
chaos	71.0 ms	72.4 ms: 1.02x slower	72.9 ms: 1.03x slower	not significant	not significant	not significant	not significant	69.0 ms: 1.03x faster	not significant
crypto_pyaes	76.3 ms	not significant	77.5 ms: 1.02x slower	75.4 ms: 1.01x faster	not significant	75.4 ms: 1.01x faster	not significant	not significant	75.3 ms: 1.01x faster
deltablue	3.76 ms	not significant	3.81 ms: 1.01x slower	not significant	not significant	not significant	not significant	not significant	not significant
django_template	37.2 ms	not significant	not significant	not significant	35.5 ms: 1.05x faster	not significant	36.4 ms: 1.02x faster	36.5 ms: 1.02x faster	not significant
dulwich_log	77.3 ms	77.9 ms: 1.01x slower	not significant	76.4 ms: 1.01x faster	76.3 ms: 1.01x faster	not significant	76.5 ms: 1.01x faster	75.8 ms: 1.02x faster	not significant
fannkuch	372 ms	376 ms: 1.01x slower	376 ms: 1.01x slower	370 ms: 1.01x faster	366 ms: 1.02x faster	367 ms: 1.01x faster	385 ms: 1.03x slower	377 ms: 1.01x slower	379 ms: 1.02x slower
float	71.7 ms	72.5 ms: 1.01x slower	not significant	not significant	72.3 ms: 1.01x slower	70.8 ms: 1.01x faster	not significant	not significant	72.2 ms: 1.01x slower
genshi_text	22.4 ms	22.8 ms: 1.02x slower	23.0 ms: 1.03x slower	23.0 ms: 1.03x slower	not significant	22.0 ms: 1.02x faster	not significant	22.1 ms: 1.01x faster	not significant
genshi_xml	58.9 ms	60.2 ms: 1.02x slower	60.7 ms: 1.03x slower	60.7 ms: 1.03x slower	61.4 ms: 1.04x slower	not significant	60.7 ms: 1.03x slower	not significant	56.5 ms: 1.04x faster
go	137 ms	139 ms: 1.01x slower	139 ms: 1.02x slower	135 ms: 1.01x faster	134 ms: 1.02x faster	133 ms: 1.02x faster	134 ms: 1.02x faster	132 ms: 1.03x faster	133 ms: 1.02x faster
hexiom	6.36 ms	6.57 ms: 1.03x slower	6.42 ms: 1.01x slower	6.27 ms: 1.01x faster	6.25 ms: 1.02x faster	6.24 ms: 1.02x faster	not significant	6.30 ms: 1.01x faster	6.32 ms: 1.01x faster
html5lib	63.0 ms	not significant	not significant	not significant	64.6 ms: 1.03x slower	not significant	not significant	not significant	not significant
json_dumps	13.1 ms	13.2 ms: 1.01x slower	not significant	not significant	not significant	12.8 ms: 1.02x faster	not significant	12.8 ms: 1.03x faster	not significant
json_loads	27.9 us	not significant	not significant	27.1 us: 1.03x faster	26.7 us: 1.05x faster	26.3 us: 1.06x faster	26.3 us: 1.06x faster	26.1 us: 1.07x faster	26.2 us: 1.07x faster
logging_format	7.29 us	7.58 us: 1.04x slower	7.43 us: 1.02x slower	8.04 us: 1.10x slower	7.35 us: 1.01x slower	not significant	7.39 us: 1.01x slower	7.37 us: 1.01x slower	7.41 us: 1.02x slower
logging_silent	93.2 ns	98.8 ns: 1.06x slower	not significant	not significant	not significant	not significant	89.9 ns: 1.04x faster	91.5 ns: 1.02x faster	91.2 ns: 1.02x faster
logging_simple	6.63 us	6.79 us: 1.02x slower	not significant	7.41 us: 1.12x slower	not significant	6.54 us: 1.01x faster	6.81 us: 1.03x slower	6.74 us: 1.02x slower	6.71 us: 1.01x slower
mako	9.83 ms	10.1 ms: 1.03x slower	9.89 ms: 1.01x slower	10.9 ms: 1.10x slower	not significant	9.61 ms: 1.02x faster	9.47 ms: 1.04x faster	9.43 ms: 1.04x faster	9.47 ms: 1.04x faster
meteor_contest	106 ms	109 ms: 1.02x slower	not significant	116 ms: 1.09x slower	not significant	not significant	107 ms: 1.01x slower	not significant	107 ms: 1.01x slower
nbody	87.7 ms	92.0 ms: 1.05x slower	89.7 ms: 1.02x slower	95.5 ms: 1.09x slower	86.3 ms: 1.02x faster	84.9 ms: 1.03x faster	86.4 ms: 1.01x faster	not significant	not significant
nqueens	80.5 ms	86.2 ms: 1.07x slower	84.1 ms: 1.05x slower	93.6 ms: 1.16x slower	83.6 ms: 1.04x slower	83.1 ms: 1.03x slower	82.7 ms: 1.03x slower	83.9 ms: 1.04x slower	83.4 ms: 1.04x slower
pathlib	19.7 ms	19.4 ms: 1.01x faster	19.3 ms: 1.02x faster	20.3 ms: 1.03x slower	not significant	19.3 ms: 1.02x faster	19.2 ms: 1.03x faster	19.2 ms: 1.02x faster	19.3 ms: 1.02x faster
pickle	11.5 us	10.8 us: 1.06x faster	not significant	not significant	not significant	11.8 us: 1.03x slower	12.0 us: 1.04x slower	not significant	11.8 us: 1.02x slower
pickle_dict	25.1 us	24.9 us: 1.01x faster	24.4 us: 1.03x faster	26.3 us: 1.05x slower	25.6 us: 1.02x slower	24.9 us: 1.01x faster	25.7 us: 1.02x slower	not significant	25.5 us: 1.02x slower
pickle_list	4.13 us	not significant	not significant	4.31 us: 1.04x slower	4.21 us: 1.02x slower	not significant	4.28 us: 1.03x slower	4.29 us: 1.04x slower	4.27 us: 1.03x slower
pickle_pure_python	311 us	not significant	314 us: 1.01x slower	not significant	not significant	308 us: 1.01x faster	not significant	302 us: 1.03x faster	308 us: 1.01x faster
pidigits	192 ms	193 ms: 1.01x slower	191 ms: 1.01x faster	185 ms: 1.03x faster	186 ms: 1.03x faster	184 ms: 1.04x faster	183 ms: 1.05x faster	184 ms: 1.04x faster	183 ms: 1.04x faster
pyflate	415 ms	425 ms: 1.02x slower	418 ms: 1.01x slower	not significant	424 ms: 1.02x slower	not significant	409 ms: 1.01x faster	412 ms: 1.01x faster	410 ms: 1.01x faster
python_startup	8.87 ms	8.95 ms: 1.01x slower	9.02 ms: 1.02x slower	not significant	not significant	8.80 ms: 1.01x faster	8.80 ms: 1.01x faster	not significant	8.79 ms: 1.01x faster
python_startup_no_site	6.61 ms	6.68 ms: 1.01x slower	not significant	6.65 ms: 1.01x slower	6.67 ms: 1.01x slower	6.59 ms: 1.00x faster	not significant	not significant	6.57 ms: 1.01x faster
raytrace	302 ms	not significant	296 ms: 1.02x faster	293 ms: 1.03x faster	295 ms: 1.02x faster	290 ms: 1.04x faster	293 ms: 1.03x faster	294 ms: 1.03x faster	287 ms: 1.05x faster
regex_compile	142 ms	not significant	141 ms: 1.01x faster	not significant	140 ms: 1.02x faster	139 ms: 1.02x faster	139 ms: 1.02x faster	138 ms: 1.03x faster	137 ms: 1.03x faster
regex_dna	193 ms	not significant	not significant	195 ms: 1.01x slower	197 ms: 1.02x slower	195 ms: 1.01x slower	195 ms: 1.01x slower	195 ms: 1.01x slower	195 ms: 1.01x slower
regex_effbot	2.84 ms	2.87 ms: 1.01x slower	2.79 ms: 1.02x faster	2.80 ms: 1.01x faster	not significant	2.82 ms: 1.01x faster	not significant	not significant	2.78 ms: 1.02x faster
regex_v8	21.7 ms	not significant	20.8 ms: 1.04x faster	21.2 ms: 1.02x faster	not significant	21.3 ms: 1.02x faster	21.4 ms: 1.01x faster	21.4 ms: 1.01x faster	21.3 ms: 1.01x faster
richards	51.9 ms	53.7 ms: 1.03x slower	not significant	48.7 ms: 1.07x faster	not significant	not significant	not significant	50.7 ms: 1.02x faster	49.3 ms: 1.05x faster
scimark_fft	330 ms	349 ms: 1.06x slower	341 ms: 1.04x slower	not significant	not significant	321 ms: 1.03x faster	not significant	not significant	not significant
scimark_lu	98.8 ms	101 ms: 1.02x slower	101 ms: 1.02x slower	not significant	99.9 ms: 1.01x slower	96.8 ms: 1.02x faster	not significant	97.2 ms: 1.02x faster	97.4 ms: 1.01x faster
scimark_monte_carlo	65.9 ms	not significant	65.1 ms: 1.01x faster	63.9 ms: 1.03x faster	64.1 ms: 1.03x faster	61.9 ms: 1.07x faster	64.2 ms: 1.03x faster	64.2 ms: 1.03x faster	63.2 ms: 1.04x faster
scimark_sor	106 ms	107 ms: 1.01x slower	not significant	104 ms: 1.02x faster	not significant	105 ms: 1.01x faster	104 ms: 1.02x faster	104 ms: 1.02x faster	103 ms: 1.02x faster
scimark_sparse_mat_mult	4.93 ms	not significant	not significant	not significant	4.78 ms: 1.03x faster	4.74 ms: 1.04x faster	not significant	not significant	not significant
spectral_norm	93.2 ms	95.1 ms: 1.02x slower	91.5 ms: 1.02x faster	88.7 ms: 1.05x faster	91.6 ms: 1.02x faster	89.2 ms: 1.04x faster	90.5 ms: 1.03x faster	91.7 ms: 1.02x faster	90.7 ms: 1.03x faster
sqlite_synth	2.38 us	2.37 us: 1.00x faster	2.36 us: 1.01x faster	not significant	not significant	2.37 us: 1.01x faster	2.35 us: 1.01x faster	2.34 us: 1.02x faster	2.34 us: 1.02x faster
sympy_expand	516 ms	not significant	not significant	not significant	not significant	512 ms: 1.01x faster	514 ms: 1.00x faster	510 ms: 1.01x faster	511 ms: 1.01x faster
sympy_integrate	21.5 ms	not significant	not significant	not significant	22.2 ms: 1.03x slower	21.3 ms: 1.01x faster	21.2 ms: 1.01x faster	21.1 ms: 1.02x faster	21.3 ms: 1.01x faster
sympy_sum	175 ms	not significant	not significant	not significant	177 ms: 1.01x slower	173 ms: 1.01x faster	173 ms: 1.02x faster	172 ms: 1.02x faster	172 ms: 1.02x faster
sympy_str	317 ms	not significant	322 ms: 1.02x slower	not significant	not significant	312 ms: 1.02x faster	314 ms: 1.01x faster	311 ms: 1.02x faster	not significant
telco	6.45 ms	not significant	6.35 ms: 1.02x faster	6.34 ms: 1.02x faster	6.54 ms: 1.01x slower	6.36 ms: 1.01x faster	not significant	6.37 ms: 1.01x faster	6.37 ms: 1.01x faster
tornado_http	171 ms	174 ms: 1.02x slower	not significant	not significant	not significant	not significant	not significant	not significant	not significant
unpack_sequence	40.7 ns	42.3 ns: 1.04x slower	41.4 ns: 1.02x slower	43.4 ns: 1.07x slower	41.5 ns: 1.02x slower	not significant	not significant	not significant	not significant
unpickle	15.5 us	not significant	16.0 us: 1.03x slower	not significant	not significant	16.1 us: 1.03x slower	14.9 us: 1.04x faster	not significant	not significant
unpickle_list	4.87 us	4.95 us: 1.02x slower	not significant	4.80 us: 1.02x faster	4.93 us: 1.01x slower	4.83 us: 1.01x faster	not significant	4.82 us: 1.01x faster	4.80 us: 1.01x faster
unpickle_pure_python	232 us	238 us: 1.02x slower	235 us: 1.01x slower	not significant	not significant	229 us: 1.01x faster	226 us: 1.03x faster	228 us: 1.02x faster	229 us: 1.01x faster
xml_etree_parse	160 ms	162 ms: 1.01x slower	not significant	not significant	163 ms: 1.02x slower	not significant	162 ms: 1.01x slower	156 ms: 1.03x faster	not significant
xml_etree_iterparse	106 ms	not significant	105 ms: 1.01x faster	not significant	not significant	104 ms: 1.03x faster	105 ms: 1.01x faster	103 ms: 1.04x faster	104 ms: 1.02x faster
xml_etree_generate	74.2 ms	76.0 ms: 1.02x slower	not significant	not significant	75.1 ms: 1.01x slower	73.6 ms: 1.01x faster	73.5 ms: 1.01x faster	73.0 ms: 1.02x faster	72.6 ms: 1.02x faster
xml_etree_process	52.0 ms	53.8 ms: 1.04x slower	52.2 ms: 1.01x slower	52.9 ms: 1.02x slower	52.5 ms: 1.01x slower	51.1 ms: 1.02x faster	51.6 ms: 1.01x faster	not significant	50.7 ms: 1.02x faster
Geometric mean	(ref)	1.01x slower	1.00x slower	1.01x slower	1.00x slower	1.01x faster	1.01x faster	1.01x faster	1.01x faster