x/build: OpenBSD 7.0 386 builder is slow

[heschi]

I am about 80% sure that the OpenBSD builders, both 6.8 and 7.0, are timing out running all.bash. We have a hard 30 minute limit on build VMs, and the OpenBSD builders take slightly longer than that to run all.bash from scratch. However, they write a snapshot of the distribution after it's built, and reusing that saves enough time for the build to succeed upon retry -- that's why the dashboard is relatively clean-looking.

This is wasteful. We should probably increase the timeout so that the build finishes, prevent the retry, or modify the OpenBSD tests somehow to run in a more reasonable amount of time.

cc @golang/release @4a6f656c

[bcmills]

This is wasteful. We should probably increase the timeout so that the build finishes, prevent the retry, or …

#42699 makes a similar observation about TryBot stalls and retries.

[bcmills]

The openbsd-386-70 builder has been struggling for quite a long time now, and it has only completed a couple of builds for the many CLs that were merged over the past few days:

It sounds like the plan is just to raise the timeout — is this blocked on anything in particular?

[heschi]

I said I'd do it and then disappeared in a puff of smoke for two weeks. Mailing now.

[gopherbot]

Change https://golang.org/cl/382978 mentions this issue: dashboard: allow 45 minutes for 386 OpenBSD builds

[heschi]

Maybe there was more than one thing going on. OpenBSD 6.8 386 is clean, perhaps because of this change or perhaps not. 7.0, however, is still failing even after (I believe) the change has taken effect. See attached.

builder openbsd-386-70.txt

It seems that cgo_test is hanging. Retitling.

[heschi]

@ianlancetaylor

I'm going to call this a release blocker until it's investigated.