test failures on ppc64

Subject: test failures on ppc64

Date: Tue, 08 Sep 2020 08:52:55 -0300

To: Dan Čermák

Cc: notmuch@notmuchmail.org

From: David Bremner

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

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

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

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