Hi Dimitri, On Wed, 26 Sep 2018 at 21:19, Dimitri Vorona via pypy-dev <pypy-dev@python.org> wrote: > In my microbenchmarks its has pretty much the same call performance as when > using cffi ABI mode (dumping the functions to a shared library first) and is > around 250ns per call slower than when using API mode.
I doubt that these microbenchmarks are relevant. But just in case, I found out that the JIT is producing two extra instructions in the ABI case, if you call ``lib.foobar()``. These two instructions are caused by reading the ``foobar`` method on the ``lib`` object. If you write instead ``foobar()``, with either ``foobar = lib.foobar`` or ``from _x_cffi.lib import foobar`` done earlier, then the speed is exactly the same. A bientôt, Armin. _______________________________________________ pypy-dev mailing list pypy-dev@python.org https://mail.python.org/mailman/listinfo/pypy-dev
