[issue8873] Popen uses 333 times as much CPU as a shell pipe on Mac OS X

[Skip Montanaro]

Skip Montanaro <skip at pobox.com> added the comment:

This problem has come up before.  It was a bug introduced I think when
the subprocess module was first incorporated into Python.  I don't
recall if the default was changed in 2.7 or 3.x.  Can you demonstrate
the problem with Python 2.7 or 3.1?  If not, I'd recommend this 
ticket just be closed.

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nosy: +skip.montanaro

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