[Python-Dev] fastnames patch
Oren Tirosh
oren-py-d@hishome.net
Mon, 27 May 2002 12:45:40 +0300
On Mon, May 27, 2002 at 12:32:31AM -0400, Tim Peters wrote:
> I finally got around to applying Oren's patch. Nice work, BTW! Here are
> before-and-after timings for the test program I posted before. This is
> current CVS, release build, Win98SE, MSVC 6, 866MHz:
>
> seconds
> function before after % speedup
> -------- ------ ----- ---------
> fastlocals 2.40 2.39 0
> globals_via_load_global 3.27 2.53 29
> locals_via_load_name 3.46 2.66 30
> globals_via_load_name 4.56 2.82 62
> builtins_via_load_global 5.99 4.04 48
> builtins_via_load_name 7.12 4.84 47
>
Here are before-and-after timings for your test program.
Python 2.2.1, Linux, gcc 2.96, 866MHz:
function before after % speedup
-------- ------ ----- ---------
fastlocals 2.63 2.58 2 (?!?)
globals_via_load_global 4.04 3.43 18
builtins_via_load_global 7.87 5.64 40
Again, without INLINE_DICT_GETITEM_INTERNED:
function before after % speedup
-------- ------ ----- ---------
fastlocals 2.63 2.59 2
globals_via_load_global 4.04 3.55 14
builtins_via_load_global 7.87 5.66 39
It looks like the inline macro doesn't really account for much the
improvement.
Oren