David W. Lambert <[EMAIL PROTECTED]> added the comment:

cygwin Python 2.5.1  (similar)
    time with os.popen :  0.439999818802
    time with subprocess.Popen :  0.361000061035

linux python 2.4.2 (similar)
    time with os.popen :  0.0344939231873
    time with subprocess.Popen :  0.0354421138763

linux python3K (both awful)
    time with os.popen :  0.715471029282
    time with subprocess.Popen :  1.58627915382

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nosy: +LambertDW

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Python tracker <[EMAIL PROTECTED]>
<http://bugs.python.org/issue4194>
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