[Python-Dev] 2.7 is here until 2020, please don't call it a waste.

[Brett Cannon]

On Tue, Jun 2, 2015 at 3:08 PM Maciej Fijalkowski <fijall at gmail.com> wrote:

> Hi
>
> There was a PSF-sponsored effort to improve the situation with the
> https://bitbucket.org/pypy/codespeed2/src being written (thank you
> PSF). It's not better enough than codespeed that I would like, but
> gives some opportunities.
>
> That said, we have a benchmark machine for benchmarking cpython and I
> never deployed nightly benchmarks of cpython for a variety of reasons.
>
> * would be cool to get a small VM to set up the web front
>
> * people told me that py3k is only interesting, so I did not set it up
> for py3k because benchmarks are mostly missing
>

Missing how? hg.python.org/benchmarks has plenty of Python 3-compatible
benchmarks to have interesting results.


>
> I'm willing to set up a nightly speed.python.org using nightly build
> on python 2 and possible python 3 if there is an interest. I need
> support from someone maintaining python buildbot to setup builds and a
> VM to set up stuff, otherwise I'm good to go
>

I suspect there is interest.

-Brett


>
> DISCLAIMER: I did facilitate in codespeed rewrite that was not as
> successful as I would have hoped. I did not receive any money from the
> PSF on that though.
>
> Cheers,
> fijal
>
>
> On Mon, Jun 1, 2015 at 1:14 PM, M.-A. Lemburg <mal at egenix.com> wrote:
> > On 01.06.2015 12:44, Armin Rigo wrote:
> >> Hi Larry,
> >>
> >> On 31 May 2015 at 01:20, Larry Hastings <larry at hastings.org> wrote:
> >>> p.s. Supporting this patch also helps cut into PyPy's reported
> performance
> >>> lead--that is, if they ever upgrade speed.pypy.org from comparing
> against
> >>> Python *2.7.2*.
> >>
> >> Right, we should do this upgrade when 2.7.11 is out.
> >>
> >> There is some irony in your comment which seems to imply "PyPy is
> >> cheating by comparing with an old Python 2.7.2": it is inside a thread
> >> which started because "we didn't backport performance improvements to
> >> 2.7.x so far".
> >>
> >> Just to convince myself, I just ran a performance comparison.  I ran
> >> the same benchmark suite as speed.pypy.org, with 2.7.2 against 2.7.10,
> >> both freshly compiled with no "configure" options at all.  The
> >> differences are usually in the noise, but range from +5% to... -60%.
> >> If anything, this seems to show that CPython should take more care
> >> about performance regressions.  If someone is interested:
> >>
> >> * "raytrace-simple" is 1.19 times slower
> >> * "bm_mako" is 1.29 times slower
> >> * "spitfire_cstringio" is 1.60 times slower
> >> * a number of other benchmarks are around 1.08.
> >>
> >> The "7.0x faster" number on speed.pypy.org would be significantly
> >> *higher* if we upgraded the baseline to 2.7.10 now.
> >
> > If someone were to volunteer to set up and run speed.python.org,
> > I think we could add some additional focus on performance
> > regressions. Right now, we don't have any way of reliably
> > and reproducibly testing Python performance.
> >
> > Hint: The PSF would most likely fund such adventures :-)
> >
> > --
> > Marc-Andre Lemburg
> > eGenix.com
> >
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