On Fri, Aug 19, 2016 at 1:20 PM, Nick Coghlan <ncoghlan@gmail.com> wrote:

On 19 August 2016 at 01:55, Victor Stinner <victor.stinner@gmail.com> wrote:

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2016-08-18 8:48 GMT+02:00 Armin Rigo <arigo@tunes.org>:

...

Indeed, bzr cannot be installed on PyPy because it uses Cython in a strange way: it declares and directly pokes inside PyListObjects from a .pyx file. But note that bzr (seems to) have systematically a pure Python version of all its .pyx files. (...)

bazar is only used for a "startup" benchmark. I don't think that such benchmark is very interesting... I would prefer to see a benchmark on a less dummy operation on the repository than displaying the help...

Simple commands like displaying help messages are where interpreter startup time dominates the end user experience for applications written in Python, though. For example, improvements to import system performance tend to mostly show up there - for longer running benchmarks, changes in startup time tend to get swamped by the actual runtime speed, while the baseline "python -c 'pass'" mainly varies based on how many modules we're implicitly importing at startup rather than how well the import system is performing .

Cheers, Nick.

I would still argue that displaying help is not a very good benchmark :-)