Author belopolsky
Recipients belopolsky, gvanrossum, lpd, rhettinger
Date 2008-03-26.18:10:00
SpamBayes Score 0.115378
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Message-id <1206555005.63.0.250372139205.issue2268@psf.upfronthosting.co.za>
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Just to quantify the improvement:

Before:

$ ./python -m timeit -s"x='abc'" "x[::-1]"
1000000 loops, best of 3: 0.305 usec per loop
$ ./python -O -m timeit -s"x='abc'" "x[::-1]"
1000000 loops, best of 3: 0.275 usec per loop

After:

$ ./python -m timeit -s"x='abc'" "x[::-1]"
1000000 loops, best of 3: 0.262 usec per loop
$ ./python -O -m timeit -s"x='abc'" "x[::-1]"
1000000 loops, best of 3: 0.253 usec per loop

For some reason, when I run pybench, the timings vary from run to run so
much that I cannot even tell the difference.  (Run to run differences
are larger than patched to original.)

FWIW, the micro-benchmark above shows 8% improvement with "-O" and 14%
improvement without.
History
Date User Action Args
2008-03-26 18:10:05belopolskysetspambayes_score: 0.115378 -> 0.115378
recipients: + belopolsky, gvanrossum, rhettinger, lpd
2008-03-26 18:10:05belopolskysetspambayes_score: 0.115378 -> 0.115378
messageid: <1206555005.63.0.250372139205.issue2268@psf.upfronthosting.co.za>
2008-03-26 18:10:00belopolskylinkissue2268 messages
2008-03-26 18:10:00belopolskycreate