Consistent CI failure in job nightly-i386-linux-deb9-validate

[Bryan Richter]

Aha: while i386-linux-deb9-validate sets no extra XZ options,
*nightly*-i386-linux-deb9-validate
(the failing job) sets "XZ_OPT = 9".

A revert would fix the problem, but presumably so would tweaking that
option. Does anyone have information that would lead to a better decision
here?


On Wed, Sep 28, 2022 at 2:02 PM Cheng Shao <cheng.shao at tweag.io> wrote:

> Sure, in which case pls revert it. Apologies for the impact, though
> I'm still a bit curious, the i386 job did pass in the original MR.
>
> On Wed, Sep 28, 2022 at 1:00 PM Bryan Richter <bryan at haskell.foundation>
> wrote:
> >
> > Yep, it seems to mostly be xz that is running out of memory. (All recent
> builds that I sampled, but not all builds through all time.) Thanks for
> pointing it out!
> >
> > I can revert the change.
> >
> > On Wed, Sep 28, 2022 at 11:46 AM Cheng Shao <cheng.shao at tweag.io> wrote:
> >>
> >> Hi Bryan,
> >>
> >> This may be an unintended fallout of !8940. Would you try starting an
> >> i386 pipeline with it reversed to see if it solves the issue, in which
> >> case we should revert or fix it in master?
> >>
> >> On Wed, Sep 28, 2022 at 9:58 AM Bryan Richter via ghc-devs
> >> <ghc-devs at haskell.org> wrote:
> >> >
> >> > Hi all,
> >> >
> >> > For the past week or so, nightly-i386-linux-deb9-validate has been
> failing consistently.
> >> >
> >> > They show up on the failure dashboard because the logs contain the
> phrase "Cannot allocate memory".
> >> >
> >> > I haven't looked yet to see if they always fail in the same place,
> but I'll do that soon. The first example I looked at, however, has the line
> "xz: (stdin): Cannot allocate memory", so it's not GHC (alone) causing the
> problem.
> >> >
> >> > As a consequence of showing up on the dashboard, the jobs get
> restarted. Since they fail consistently, they keep getting restarted. Since
> the jobs keep getting restarted, the pipelines stay alive. When I checked
> just now, there were 8 nightly runs still running. :) Thus I'm going to
> cancel the still-running nightly-i386-linux-deb9-validate jobs and let the
> pipelines die in peace. You can still find all examples of failed jobs on
> the dashboard:
> >> >
> >> >
> https://grafana.gitlab.haskell.org/d/167r9v6nk/ci-spurious-failures?orgId=2&from=now-90d&to=now&refresh=5m&var-types=cannot_allocate
> >> >
> >> > To prevent future problems, it would be good if someone could help me
> look into this. Otherwise I'll just disable the job. :(
> >> > _______________________________________________
> >> > ghc-devs mailing list
> >> > ghc-devs at haskell.org
> >> > http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
>
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