Flávio Ribeiro <[email protected]> added the comment:
For doc purposes:
My first shot is that in my machine the os.rename isn't atomic and this could
be generating an overhead somehow. Looking at the code, I found decisions being
made on posixmodule.c about what `rename` function should be used:
#ifdef HAVE_RENAMEAT
if (dir_fd_specified)
result = renameat(src_dir_fd, src.narrow, dst_dir_fd, dst.narrow);
else
#endif
result = rename(src.narrow, dst.narrow);
Py_END_ALLOW_THREADS
In my machine the second `rename` is being used.
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<http://bugs.python.org/issue15398>
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