Re: [PATCH 1/2] maintenance: account for promisor pack geometry

[Taylor Blau <ttaylorr@openai.com>]

On Tue, Aug 11, 2026 at 12:01:23PM +0200, Patrick Steinhardt wrote:
> > So I am not sure that I understand your concern here, but please let me
> > know if I am missing some aspect of it.
>
> The concern is that it's quite unlikely that both the geometric and
> non-geometric sequence will merge all packs together at the same point
> in time. Consequently, we'll never hit the case where we perform an
> all-into-one pack to prune unreachable objects, and that may cause us to
> never prune objects at all.
>
> So what I'm wondering is whether we should be a bit more clever about
> that and perform an all-into-one repack under a new condition, like for
> example when the objects we're about to repack exceed a certain
> percentage of the repository size.
>
> Hope that clarifies it a bit :)

Ah, I see what you're saying. We should still be OK here as the goal of
geometric repacking is to converge both the promisor and non-promisor
packs towards a single pack, at which point we would do an all-into-one
repack.

If the two are perfectly out of phase, then this change would prevent us
from running all-into-one maintenance. But that does not seem like a
likely scenario, and the behavior here should be a strict improvement in
the meantime otherwise.

Thanks,
Taylor