Message 291471 - Python tracker

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In-reply-to
Author	methane
Recipients	methane
Date	2017年04月11日.09:42:45
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1491903765.98.0.380026551421.issue30040@psf.upfronthosting.co.za>

Content
performance impact best case: $ ./python.patched -m perf timeit --compare-to=`pwd`/python.default -- '{}' python.default: ..................... 36.9 ns +- 0.9 ns python.patched: ..................... 25.3 ns +- 0.7 ns Mean +- std dev: [python.default] 36.9 ns +- 0.9 ns -> [python.patched] 25.3 ns +- 0.7 ns: 1.46x faster (-31%) worst case: $ ./python.patched -m perf timeit --compare-to=`pwd`/python.default -- 'x={}; x["a"]=1' python.default: ..................... 73.3 ns +- 1.2 ns python.patched: ..................... 82.8 ns +- 1.8 ns Mean +- std dev: [python.default] 73.3 ns +- 1.2 ns -> [python.patched] 82.8 ns +- 1.8 ns: 1.13x slower (+13%)

Content

performance impact
best case:
$ ./python.patched -m perf timeit --compare-to=`pwd`/python.default -- '{}'
python.default: ..................... 36.9 ns +- 0.9 ns
python.patched: ..................... 25.3 ns +- 0.7 ns
Mean +- std dev: [python.default] 36.9 ns +- 0.9 ns -> [python.patched] 25.3 ns +- 0.7 ns: 1.46x faster (-31%)
worst case:
$ ./python.patched -m perf timeit --compare-to=`pwd`/python.default -- 'x={}; x["a"]=1'
python.default: ..................... 73.3 ns +- 1.2 ns
python.patched: ..................... 82.8 ns +- 1.8 ns
Mean +- std dev: [python.default] 73.3 ns +- 1.2 ns -> [python.patched] 82.8 ns +- 1.8 ns: 1.13x slower (+13%)

History
Date	User	Action	Args
2017年04月11日 09:42:45	methane	set	recipients: + methane
2017年04月11日 09:42:45	methane	set	messageid: <1491903765.98.0.380026551421.issue30040@psf.upfronthosting.co.za>
2017年04月11日 09:42:45	methane	link	issue30040 messages
2017年04月11日 09:42:45	methane	create

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