[Python-Dev] OS-X builds for 3.7.0 (original) (raw)

Ray Donnelly mingw.android at gmail.com
Wed Jan 31 07:12:18 EST 2018

On Wed, Jan 31, 2018 at 11:16 AM, Joni Orponen <j.orponen at 4teamwork.ch> wrote:

On Wed, Jan 31, 2018 at 9:31 AM, Ray Donnelly <mingw.android at gmail.com> wrote:

We see a 1.1 to 1.2 times performance benefit over official releases as measured using 'python performance'. Apart from a static interpreter we also enable LTO and PGO and only build for 64-bit so I'm not sure how much each bit continues. Our recipe for python 3.6 can be found at: Do you metrify LTO and PGO independent of each other as well or only the "enable everything" combo? I've had mixed results with LTO so far, but this is probably hardware / compiler combination specific.

I've never found enough time to take detailed metrics, sorry. Maybe one day? Looking at my performance graphs again:

Against the official CPython 3.6 (probably .3 or .4) release I see: 1 that is 2.01x faster (python-startup, 24.6ms down to 12.2ms) 5 that are >=1.5x,<1.6x faster. 13 that are >=1.4x,<1.5x faster. 21 that are >=1.3x,<1.4x faster. 14 that are >=1.2x,<1.3x faster. 5 that are >=1.1x,<1.2x faster. 0 that are < 1.1x faster/slower.

Pretty good numbers overall I think.

-- Joni Orponen

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