[Pkg-mailman-hackers] Bug#1014037: mailman3-web: Possible memory leak: uwsgi OOMs after a few weeks

[Antoine Beaupré]

On 2025-02-24 17:51:17, Michael Tremer wrote:
> Hello Antoine,
>
>> On 24 Feb 2025, at 16:51, Antoine Beaupré <anarcat at debian.org> wrote:

[...]

>> So, TL;DR: improved, but not fixed. I suspect we had a multi-dimensional
>> issue, of which search/whoosh *was* a part of, because we would see a
>> huge increase in OOMs when rebuilding the indexes. But we're still
>> having an issue, so perhaps there's something else.
>
> This is my experience with Xapian and I have found confirmation that this is supposed to be normal. My mailbox indexes were massive and there was no point having them any more. So I can confirm that this looked very similar in Dovecot, too.

A 10x amplification in the disk usage is not normal.

https://gitlab.com/mailman/hyperkitty/-/issues/533

I use notmuch as a search index here, and the amplification is
*opposite*, 4.5x *reduction* in disk usage compared to the original
dataset.