On Wed, 3 Mar 2021 07:01:46 GMT, Lin Zang <lz...@openjdk.org> wrote:

> 8262386: resourcehogs/serviceability/sa/TestHeapDumpForLargeArray.java timed 
> out

The fix is fairly big and could use some explaining. Can you provide a bit more 
detail on what the bug is? In the CR you mention it is due to the combination 
of a very large array and the segmented heap dump support, but don't really 
explain what the actual bug is. You can add this detail to the CR rather than 
here.  Also can explain your solution, especially this new `writeThrough` mode? 
Thanks.

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PR: https://git.openjdk.java.net/jdk/pull/2803

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