Serhiy Storchaka <storch...@gmail.com> added the comment: Thank you, Antoine.
> 3327 (+360%) 15304 encode utf-16le 'A'*10000 > 3314 (+335%) 14413 encode utf-16le '\x80'*10000 > 3290 (+357%) 15036 encode utf-16be '\x80'+'A'*9999 It must be a fluctuation (-30-40%). For all UCS1 strings the same code is used. > 1598 (-42%) 930 encode utf-16be '\U00010000'*10000 This is most likely the fluctuation too. Code for non-BMP characters is different from the code for other characters in UCS4 string, but unlikely a difference is 1.5x. Reproduced whether this result? On 32-bit Linux, Intel Atom N570 @ 1.66GHz: Py2.7 Py3.2 Py3.3 patched 273 (+229%) 274 (+227%) 333 (+169%) 897 encode utf-16le 'A'*10000 274 (+226%) 275 (+225%) 334 (+168%) 894 encode utf-16le '\x80'*10000 274 (+231%) 275 (+230%) 334 (+172%) 908 encode utf-16le '\x80'+'A'*9999 273 (+752%) 275 (+746%) 276 (+743%) 2326 encode utf-16le '\u0100'*10000 274 (+695%) 275 (+692%) 276 (+689%) 2177 encode utf-16le '\u0100'+'A'*9999 274 (+739%) 275 (+736%) 276 (+733%) 2300 encode utf-16le '\u0100'+'\x80'*9999 274 (+739%) 275 (+736%) 276 (+733%) 2298 encode utf-16le '\u8000'*10000 274 (+697%) 274 (+697%) 276 (+691%) 2184 encode utf-16le '\u8000'+'A'*9999 274 (+741%) 274 (+741%) 277 (+731%) 2303 encode utf-16le '\u8000'+'\x80'*9999 274 (+770%) 275 (+767%) 276 (+764%) 2384 encode utf-16le '\u8000'+'\u0100'*9999 279 (+51%) 279 (+51%) 217 (+94%) 422 encode utf-16le '\U00010000'*10000 274 (+6%) 274 (+6%) 162 (+79%) 290 encode utf-16le '\U00010000'+'A'*9999 274 (+6%) 274 (+6%) 162 (+79%) 290 encode utf-16le '\U00010000'+'\x80'*9999 273 (+5%) 275 (+5%) 162 (+78%) 288 encode utf-16le '\U00010000'+'\u0100'*9999 274 (+5%) 275 (+5%) 162 (+78%) 288 encode utf-16le '\U00010000'+'\u8000'*9999 274 (+152%) 275 (+151%) 334 (+107%) 690 encode utf-16be 'A'*10000 274 (+154%) 275 (+153%) 334 (+109%) 697 encode utf-16be '\x80'*10000 274 (+152%) 275 (+151%) 333 (+108%) 691 encode utf-16be '\x80'+'A'*9999 274 (+146%) 275 (+145%) 276 (+145%) 675 encode utf-16be '\u0100'*10000 274 (+146%) 275 (+145%) 276 (+145%) 675 encode utf-16be '\u0100'+'A'*9999 274 (+145%) 275 (+144%) 276 (+143%) 671 encode utf-16be '\u0100'+'\x80'*9999 274 (+145%) 275 (+144%) 276 (+143%) 672 encode utf-16be '\u8000'*10000 275 (+147%) 275 (+147%) 276 (+146%) 680 encode utf-16be '\u8000'+'A'*9999 274 (+146%) 275 (+145%) 276 (+144%) 674 encode utf-16be '\u8000'+'\x80'*9999 275 (+143%) 275 (+143%) 276 (+142%) 667 encode utf-16be '\u8000'+'\u0100'*9999 279 (+26%) 279 (+26%) 217 (+62%) 351 encode utf-16be '\U00010000'*10000 274 (-2%) 275 (-3%) 162 (+65%) 268 encode utf-16be '\U00010000'+'A'*9999 274 (-2%) 275 (-3%) 162 (+65%) 268 encode utf-16be '\U00010000'+'\x80'*9999 274 (-4%) 275 (-4%) 162 (+63%) 264 encode utf-16be '\U00010000'+'\u0100'*9999 274 (-3%) 275 (-4%) 162 (+64%) 265 encode utf-16be '\U00010000'+'\u8000'*9999 ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue15026> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
