check: try to insulate the test framework from oom killer
Some of the tests in xfstests (e.g. generic/224 with 512M of memory)
consume a lot of memory, and when this happens the OOM killer will
run around stomping on processes. Sometimes it kills the ./check
process before it kills the actual test, which means that the test
run doesn't complete.
Therefore, make the ./check process OOM-proof while bumping up the
attractiveness of the test itself, in the hopes that even if the
test OOMs we'll still be able to continue on our way.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
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