[pypy-issue] [issue729] Pypy strangely slow when reading files

[Armin Rigo]

Armin Rigo <armin.rigo at gmail.com> added the comment:

Da_Blitz: ah, it's because CPython has special code for iterating over a file. 
It's not equivalent to calling f.readline() to get the next line.  It's doing
some read-ahead and caching on its own...

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PyPy bug tracker <tracker at bugs.pypy.org>
<https://bugs.pypy.org/issue729>
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