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* Speed up Unicode operations (AndrewDalke, FredrikLundh). Most notable, repeat and most search operations (find, index, count, in) are now a lot faster. Current stringbench results: | * Speed up Unicode operations (AndrewDalke, FredrikLundh). Most notable, repeat and most search operations (find, index, count, in) are now a lot faster. Also, rsplit is now as fast as split, and splitlines is nearly as fast as a plain split("\n"). Current stringbench results: |
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1648.95 2940.04 56.1 TOTAL 2.5a2 1644.42 2795.33 58.8 TOTAL current (repeat tweaks) 1643.69 1652.60 99.5 TOTAL optimized match macro 1644.99 969.33 169.7 TOTAL optimized in |
2374.13 3786.27 62.7 TOTAL 2.5a2 2347.33 1335.65 175.7 TOTAL trunk |
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* The struct module has been rewritten to pre-compile struct descriptors (similar to the RE module). On average, this leads to a 20% speedup [BobIppolito]. |
Things we think the Python community will like.
Assorted tweaks:
- Frame optimizations
Made Gzip readline 30-40% faster (BobIppolito)
Speed up Unicode operations (AndrewDalke, FredrikLundh). Most notable, repeat and most search operations (find, index, count, in) are now a lot faster. Also, rsplit is now as fast as split, and splitlines is nearly as fast as a plain split("\n"). Current stringbench results:
str(ms) uni(ms) % comment ----------------------------------------------------- 2374.13 3786.27 62.7 TOTAL 2.5a2 2347.33 1335.65 175.7 TOTAL trunk
Patch 1335972 was a combination bugfix+speedup for string->int conversion. These are the speedups measured on my Windows box for decimal strings of various lengths. Note that the difference between 9 and 10 is the difference between short and long Python ints on a 32-bit box. The patch doesn't actually do anything to speed conversion to long directly; the speedup in those cases is solely due to due to detecting "unsigned long" overflow more quickly:
length speedup ------ ------- 1 12.4% 2 15.7% 3 20.6% 4 28.1% 5 33.2% 6 37.5% 7 41.9% 8 46.3% 9 51.2% 10 19.5% 11 19.9% 12 23.9% 13 23.7% 14 23.3% 15 24.9% 16 25.3% 17 28.3% 18 27.9% 19 35.7%
The struct module has been rewritten to pre-compile struct descriptors (similar to the RE module). On average, this leads to a 20% speedup [BobIppolito].