Re: ZODB on pypy?

Thanks for the info, Jason!

I'm guessing its time to seriously consider PyPy as an alternative to 
Python3 :)

Best Regards,

Etienne


Le 2017-10-08 à 16:48, Jason Madden a écrit :
>
>> On Oct 8, 2017, at 15:03, Etienne Robillard <[email protected]> wrote:
>>
>> Hi all,
>>
>> I would like your input on the feasibility of porting ZODB to pypy.
>>
>> Is it possible to run ZODB on top of pypy?
> ZODB already runs well on PyPy: https://github.com/zopefoundation/ZODB/blob/master/setup.py#L30
> As does ZEO: https://github.com/zopefoundation/ZEO/blob/master/setup.py#L47
> And RelStorage: https://github.com/zodb/relstorage/blob/master/setup.py#L31
>
> Under PyPy, ZODB with FileStorage  produces numbers in the zodbshootout that are substantially faster than CPython (https://github.com/zopefoundation/ZODB/pull/160).(This is likely also true for ZEO with FileStorage, at least for sufficiently long-lived clients, but I haven't benchmarked recently.)
>
> (Results in objects/second, higher is better.)
> "Transaction",                    PyPy    CPython 2.7
> "Add 1000 Objects",              35,651   19,531
> "Update 1000 Objects",           54,906   16,201
> "Read 1000 Cold Objects",       103,484   22,111
> "Read 1000 Hot Objects",         84,721   21,851
> "Read 1000 Steamin' Objects", 2,112,095  880,582
>
> It's been a long time since I've run the benchmarks for RelStorage under PyPy (Predating the afor-linked PR160.). The most recent I've published are here: http://relstorage.readthedocs.io/en/latest/performance.html#pypy YMMV, especially depending on the database driver you use.
>
> Keep in mind these are results of a synthetic benchmark designed primarily for tuning ZODB/persistent/RelStorage performance, so their correlation to actual application performance is unclear.
>
> Jason
>

-- 
Etienne Robillard
[email protected]
http://www.isotopesoftware.ca/

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