RFR: 8129590: TestShrinkDefragmentedHeap.java runs out of memory
stefan.johansson at oracle.com
Wed Jul 1 13:51:25 UTC 2015
Please review this test-fix to avoid:
The test specified the initial heap size and the young generation size
but not the maximum heap size. It needs more memory than the initial
heap size and in most cases this is not a problem, because the heap can
be expanded. But on hosts with very little memory it becomes a problem,
because the maximum heap size gets limited to the same size as the
initial heap size.
A simple fix for the issue is to set the the maximum heap size to
something a little larger than the initial heap size to make sure the
expansion is possible. This might come with other problems if the host
can't support the needed heap size, but in such cases I think we should
avoid running this test.
* Verified fix on failing host.
* Reproduced failure locally by setting small Xmx and verified that
making it larger fixes the issue.
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