test failures on ppc64

[David Bremner <david@tethera.net>]

Dan Čermák <dan.cermak@posteo.net> writes:
>
> I was wrong, "get total messages with closed database" from
> T568-lib-thread still fails sometimes on ppc64, but unfortunately not
> consistently. It appears to mostly fail on a worker with relatively
> little memory (3584 MB vs 8192 MB or 11264MB). I'll try to keep an eye
> out on that hoping to find some indicator what could be wrong.
>

If you have an interactive ppc64 machine (I'm guessing not, but someone
might), it would be interesting to run something like

cd test && count=0 && while ./T568-lib-thread.sh; do
   count=$((count + 1));
   echo $count
done

And see if the test is just flaky, and fails after some number of
repetitions.

FWIW, it passes 150 times on amd64.

I guess another thing to try would be serialize the test suite on the
low memory machines (set NOTMUCH_TEST_SERIALIZE to some non-empty value,
or remove 'parallel' from the path

d