[Python-Dev] xreadlines : readlines :: xrange : range
Guido van Rossum
Thu, 04 Jan 2001 14:07:13 -0500
> So it looks like the ALLOW_THREADS should be moved out of the for
> loop. This produced no measureable performance difference on Solaris;
> I'll leave it to GvR to try it on Linux. I wonder if FreeBSD has some
> unusually slow thread operation?
I kind of doubt that it's Py_ALLOW_THREADS -- it's in the outer loop,
which typically only gets executed once. It only goes around a second
time when the line is longer than the initial buffer. We could tweak
the initial buffer size (currently 100, with increments of 1000).
--Guido van Rossum (home page: http://www.python.org/~guido/)