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| 1 | =============== |
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| 2 | Optimizations |
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| 3 | =============== |
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| 4 | |
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| 5 | notes on optimization points. |
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| 6 | |
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| 7 | * os.path.normpath is slow:: |
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| 8 | |
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| 9 | python -m timeit -s 'x="/usr/lib/portage/bin/dar"; \ |
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| 10 | from os.path import normpath' 'normpath(x)' |
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| 11 | 100000 loops, best of 3: 14.1 usec per loop |
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| 12 | |
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| 13 | python -m timeit -s 'x="/usr/lib/portage/bin/dar";from os.path import sep; \ |
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| 14 | normpath=lambda x:sep.join(filter(None, x.split(sep)))' \ |
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| 15 | 'normpath(x)' |
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| 16 | 100000 loops, best of 3: 5.62 usec per loop |
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| 17 | * os.path.join is a bit slow also, mainly the '/' testing. |
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| 18 | |
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| 19 | Point the two above into pkgcore.util.fs.$FUNC , if/when underlying |
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| 20 | python is faster, just drop the func and leave the indirection in. |
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