Serhiy Storchaka <storch...@gmail.com> added the comment:
Here are the results of benchmarking (numbers in MB/s).
On 32-bit Linux, AMD Athlon 64 X2 4600+ @ 2.4GHz:
Py2.7 Py3.2 Py3.3
patch
utf-8 'A'*10000 191 (+790%) 1170 (+45%) 1664
(+2%) 1700
utf-8 '\x80'*10000 187 (+4%) 219 (-11%) 172
(+13%) 194
utf-8 '\x80'+'A'*9999 191 (+98%) 1152 (-67%) 376 (+1%)
378
utf-8 '\u0100'*10000 188 (+15%) 221 (-2%) 164
(+32%) 217
utf-8 '\u0100'+'A'*9999 191 (+103%) 1150 (-66%) 382 (+1%)
387
utf-8 '\u0100'+'\x80'*9999 188 (+15%) 221 (-2%) 164
(+32%) 217
utf-8 '\u8000'*10000 244 (-12%) 263 (-18%) 191
(+13%) 215
utf-8 '\u8000'+'A'*9999 191 (+102%) 1174 (-67%) 382 (+1%)
386
utf-8 '\u8000'+'\x80'*9999 188 (+15%) 216 (+0%) 164
(+32%) 217
utf-8 '\u8000'+'\u0100'*9999 188 (+15%) 216 (+0%) 164
(+32%) 217
utf-8 '\U00010000'*10000 251 (-15%) 248 (-14%) 199 (+7%)
213
utf-8 '\U00010000'+'A'*9999 191 (+97%) 1173 (-68%) 372 (+1%)
376
utf-8 '\U00010000'+'\x80'*9999 188 (+21%) 221 (+3%) 180
(+26%) 227
utf-8 '\U00010000'+'\u0100'*9999 188 (+21%) 221 (+3%) 180
(+26%) 227
utf-8 '\U00010000'+'\u8000'*9999 244 (-9%) 263 (-16%) 201
(+10%) 221
On 32-bit Linux, Intel Atom N570 @ 1.66GHz:
Py2.7 Py3.2 Py3.3
patch
utf-8 'A'*10000 117 (+414%) 349 (+72%) 597 (+1%)
601
utf-8 '\x80'*10000 86 (-5%) 89 (-8%) 67 (+22%)
82
utf-8 '\x80'+'A'*9999 117 (+6%) 340 (-64%) 126 (-2%)
124
utf-8 '\u0100'*10000 86 (-2%) 89 (-6%) 66 (+27%)
84
utf-8 '\u0100'+'A'*9999 117 (+5%) 339 (-64%) 78 (+58%)
123
utf-8 '\u0100'+'\x80'*9999 86 (-2%) 89 (-6%) 66 (+27%)
84
utf-8 '\u8000'*10000 109 (-26%) 98 (-17%) 71 (+14%)
81
utf-8 '\u8000'+'A'*9999 116 (+7%) 339 (-63%) 78 (+59%)
124
utf-8 '\u8000'+'\x80'*9999 86 (-3%) 89 (-7%) 66 (+26%)
83
utf-8 '\u8000'+'\u0100'*9999 86 (-3%) 89 (-7%) 66 (+26%)
83
utf-8 '\U00010000'*10000 106 (-14%) 105 (-13%) 81 (+12%)
91
utf-8 '\U00010000'+'A'*9999 116 (+12%) 338 (-62%) 127 (+2%)
130
utf-8 '\U00010000'+'\x80'*9999 86 (+6%) 88 (+3%) 69 (+32%)
91
utf-8 '\U00010000'+'\u0100'*9999 86 (+6%) 88 (+3%) 69 (+32%)
91
utf-8 '\U00010000'+'\u8000'*9999 109 (-24%) 98 (-15%) 74 (+12%)
83
The results were ambiguous (everywhere plus, but in different ways). I
would like to see the results for 64-bit platforms. For scripts see
issue14624.
----------
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue14654>
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