On Wed, May 18, 2022 at 5:30 PM Khem Raj <raj.k...@gmail.com> wrote:
>
>
> On 5/18/22 5:48 AM, jaskij wrote:
> > Hello everyone,
> >
> > After updating from Hardknott to Kirkstone, we have noticed a massive
> > performance regression in python3-protobuf.
> >
> > The regression is caused by the package not building (and thus not
> > using) the native implementation. What seems to have happened is that
> > `DISTUTILS_BUILD_ARGS` in the python3-protobuf recipe was not updated to
> > `SETUPTOOLS_BUILD_ARGS`. This would be a simple fix - just update the
> > recipe and set the flag, if not for one thing: protobuf in meta-oe is in
> > version 3.19.4, and python3-protobuf 3.20.0 in meta-python is not able
> > to link against it.
> >
> > Internally, I have rolled back python3-protobuf to 3.19.4 and built it
> > with `SETUPTOOLS_BUILD_ARGS += "--cpp_implementation"`. The difference
> > is... massive.
> >
> > For 2000 samples with our test code we get (all times in microseconds):
> >
> > python3-protobuf 3.20
> > parse mean: 28713us percentiles: {5: 26623, 25: 27343, 50: 28943,
> > 75: 29663, 95: 30687}
> > python3-protobuf 3.19
> > parse mean: 939us percentiles: {5: 756, 25: 944, 50: 950, 75:
> > 956, 95: 1008}
> >
> > Changing the variable in python3-protobuf is simple, the problem is the
> > version mismatch. It's either roll back python3-protobuf or update
> protobuf.
> >
>
> Can you test the updated protobuf scenario ? if that works I would think
> thats a preferred aproach.
>
> Some of the current patches fail to apply to 3.20.1, and I am not familiar
with the codebase, otherwise I'd be happy to.
> > Jan
> >
> > --
> > Jan Dorniak
> > e-mail:jas...@gmail.com <mailto:e-mail%3ajas...@gmail.com>
> >
> >
> >
> >
> >
>
--
Jan Dorniak
e-mail:jas...@gmail.com
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