[Python-Dev] PEP 471 (scandir): Poll to choose the implementation (full C or C+Python)

[Antoine Pitrou]

On Fri, 13 Feb 2015 11:07:03 +0100
Victor Stinner <victor.stinner at gmail.com> wrote:
> 
> * C implementation: scandir is at least 3.5x faster than listdir, up
> to 44.6x faster on Windows
> * C+Python implementation: scandir is not really faster than listdir,
> between 1.3x and 1.4x faster

So amusingly, the bottleneck is not so much the cost of system calls,
but the cost of Python wrappers around system calls.

Regards

Antoine.