bug#43564: cuirass: Contention while registering new builds.

[Ludovic Courtès]

Hello!

Mathieu Othacehe <othacehe@gnu.org> skribis:

> Turns out, once an evaluation is over, new builds are registered. This
> registration tries to insert a new build for each derivation returned by
> the evaluation phase. If the new build does not add a new output, the
> insertion query is then rollbacked. This means that there are at least
> as many insertion queries as new derivations.

Isn’t that the real problem, that we’re doing one transaction per
derivation?

Ideally, upon evaluation completion, I’d expect us to create a single
transaction that registers all 50K derivations at once, no?

Thanks for the great improvements in this area!

Ludo’.