Re: s390x builder outage

On Sat, Aug 15, 2026 at 4:38 PM Chris Adams <[email protected]> wrote:
>
> Once upon a time, Fabio Valentini <[email protected]> said:
> > When there are idle builders available, then ppc64le builders appear
> > to be slightly slower than s390x.
> > But when all s390x builders are busy, they become the bottleneck, both
> > in terms of wait time (time until a build is assigned to an s390x
> > builder) *and* build time (more builds running on the same hardware?).
>
> That sounds like maybe too many parallel builds are being sent to the
> same hardware, which I would think would be easy to adjust.

Not really, no ... provisioning fewer builders to the same hardware
just makes the bottleneck worse (fewer builders available). From what
I can tell, the current setup (number of builders / available
hardware) is pretty much the best that can be done - without actually
getting more hardware.

Fabio
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