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Aug 9, 2012, 7:32 PM
Post #2 of 3
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[issue15612] Rewriter StringIO to use the _PyUnicodeWriter API
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STINNER Victor added the comment:
Results of my micro benchmark. Use attached bench_stringio.py with benchmark.py:
https://bitbucket.org/haypo/misc/src/tip/python/benchmark.py
Command:
./python benchmark.py script bench_stringio.py
----
Common platform:
CPU model: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
Python unicode implementation: PEP 393
Platform: Linux-3.4.4-4.fc16.x86_64-x86_64-with-fedora-16-Verne
Bits: int=32, long=64, long long=64, pointer=64
CFLAGS: -Wno-unused-result -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes
Platform of campaign pyaccu:
Date: 2012-08-10 04:24:53
SCM: hg revision=aaa68dce117e tag=tip branch=default date="2012-08-09 21:38 +0200"
Python version: 3.3.0b1 (default:aaa68dce117e, Aug 10 2012, 04:24:19) [GCC 4.6.3 20120306 (Red Hat 4.6.3-2)]
Platform of campaign writer:
Date: 2012-08-10 04:23:21
SCM: hg revision=aaa68dce117e+ tag=tip branch=default date="2012-08-09 21:38 +0200"
Python version: 3.3.0b1 (default:aaa68dce117e+, Aug 10 2012, 04:18:39) [GCC 4.6.3 20120306 (Red Hat 4.6.3-2)]
--------------------------------------+-------------+---------------
Tests | pyaccu | writer
--------------------------------------+-------------+---------------
writer ascii | 30.4 ms (*) | 30.4 ms
writer reader ascii | 37.1 ms (*) | 37 ms
writer latin1 | 31.5 ms (*) | 30.6 ms
writer reader latin1 | 38.6 ms (*) | 37.4 ms
writer bmp | 31.8 ms (*) | 29.7 ms (-7%)
writer reader bmp | 40.8 ms (*) | 36.6 ms (-10%)
writer non-bmp | 33.4 ms (*) | 30.2 ms (-10%)
writer reader non-bmp | 40.9 ms (*) | 36.7 ms (-10%)
writer long lines ascii | 7.96 ms (*) | 7.34 ms (-8%)
writer-reader long lines ascii | 8.16 ms (*) | 7.39 ms (-9%)
writer long lines latin1 | 8.01 ms (*) | 7.4 ms (-8%)
writer-reader long lines latin1 | 8.05 ms (*) | 7.4 ms (-8%)
writer long lines bmp | 14 ms (*) | 9.42 ms (-33%)
writer-reader long lines bmp | 14.2 ms (*) | 9.45 ms (-34%)
writer long lines non-bmp | 13.9 ms (*) | 9.62 ms (-31%)
writer-reader long lines non-bmp | 14.3 ms (*) | 9.63 ms (-32%)
writer very long lines ascii | 7.96 ms (*) | 7.36 ms (-7%)
writer-reader very long lines ascii | 8.05 ms (*) | 7.37 ms (-8%)
writer very long lines latin1 | 7.98 ms (*) | 7.33 ms (-8%)
writer-reader very long lines latin1 | 8 ms (*) | 7.39 ms (-8%)
writer very long lines bmp | 14.1 ms (*) | 9.34 ms (-34%)
writer-reader very long lines bmp | 14.2 ms (*) | 9.4 ms (-34%)
writer very long lines non-bmp | 13.9 ms (*) | 9.5 ms (-32%)
writer-reader very long lines non-bmp | 14 ms (*) | 9.61 ms (-31%)
reader ascii | 6.48 ms (*) | 6.22 ms
reader latin1 | 6.59 ms (*) | 6.57 ms
reader bmp | 7.22 ms (*) | 6.9 ms
reader non-bmp | 7.65 ms (*) | 7.31 ms
--------------------------------------+-------------+---------------
Total | 489 ms (*) | 431 ms (-12%)
--------------------------------------+-------------+---------------
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Added file: http://bugs.python.org/file26753/bench_stringio.py
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Python tracker <report [at] bugs>
<http://bugs.python.org/issue15612>
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