[Pkg-mailman-hackers] Bug#914099: mailman3-full: mailman3-web-qcluster causes high database load

[Stefan Tatschner]

On Mon, 2018-11-19 at 13:09 +0100, Stefan Tatschner wrote:
> I installed the mailman3-full package from the buster repository. The
> qcluster component generates a high database load with these queries:

The reason for this is that the django qcluster component polls the
database regularly:

https://github.com/Koed00/django-q/issues/139
https://django-q.readthedocs.io/en/latest/configure.html#poll

IMO it would make sense to make the qcluster component optional, since
there are cronjobs anyway. But that's an upstream issue...

In the meanwhile debian could configure a lower default poll rate. I
have set 5 seconds instead of the default 0.2 in order to reduce
database traffic.

Oh and the issue is related to hyperkitty, which is part of the
mailman3-full metapackage. Maybe someone could tag this issue
accordingly.

Thanks,
Stefan