Antoine Pitrou <pit...@free.fr> added the comment:
I see a slight increase under 64-bit Linux with gcc 4.5.2, too:
vanilla patched
utf-8 'A'*10000 7857 (+4%) 8210
utf-8 'A'*9999+'\x80' 5392 (+8%) 5843
utf-8 'A'*9999+'\u0100' 2119 (+3%) 2173
utf-8 'A'*9999+'\u8000' 2121 (+2%) 2172
utf-8 'A'*9999+'\U00010000' 2248 (+2%) 2293
utf-8 '\x80'*10000 1015 (+1%) 1021
utf-8 '\x80'+'A'*9999 2747 (+5%) 2877
utf-8 '\x80'*9999+'\u0100' 868 (+0%) 869
utf-8 '\x80'*9999+'\u8000' 857 (+2%) 870
utf-8 '\x80'*9999+'\U00010000' 877 (+0%) 881
utf-8 '\u0100'*10000 1016 (+16%) 1181
utf-8 '\u0100'+'A'*9999 2506 (+3%) 2592
utf-8 '\u0100'+'\x80'*9999 1015 (+16%) 1179
utf-8 '\u0100'*9999+'\u8000' 1015 (+16%) 1182
utf-8 '\u0100'*9999+'\U00010000' 875 (+13%) 992
utf-8 '\u8000'*10000 836 (+18%) 985
utf-8 '\u8000'+'A'*9999 2508 (+3%) 2588
utf-8 '\u8000'+'\x80'*9999 1015 (+16%) 1182
utf-8 '\u8000'+'\u0100'*9999 1014 (+17%) 1182
utf-8 '\u8000'*9999+'\U00010000' 767 (+17%) 894
utf-8 '\U00010000'*10000 730 (+0%) 732
utf-8 '\U00010000'+'A'*9999 2542 (+2%) 2599
utf-8 '\U00010000'+'\x80'*9999 1013 (+17%) 1182
utf-8 '\U00010000'+'\u0100'*9999 1013 (+17%) 1181
utf-8 '\U00010000'+'\u8000'*9999 727 (+0%) 728
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue14923>
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