x/build: intermittent failures on linux/ppc64 builder

[laboger]

What version of Go are you using (go version)?

tip

Does this issue reproduce with the latest release?

intermittently

What operating system and processor architecture are you using (go env)?

linux/ppc64

I've seen intermittent failures on the golang build page for the ppc64 column, (never ppc64le) and the logs show that the failures are due to hangs when testing the runtime pkg. I have never been able to reproduce this, but I suspect it is due to the timeout value not being high enough because of its intermittent nature. It must be close to the limit and sometimes goes over due to other factors on the system.

I'm not sure what the preferred way to increase the timeout for ppc64 testing in this case to see if that will resolve this problem. I can make the change if someone tells me what it should be.

[bcmills]

I can make the change if someone tells me what it should be.

If I understand your theory correctly, I think you should be able to add GO_TEST_TIMEOUT_SCALE=2 to the environment in golang.org/x/build/dashboard/builders.go.

(CC: @bradfitz in case I'm mistaken.)

[laboger]

This particular problem hasn't happened in a while, so I will close it.