When heap is dumped as a result of HeapDumpBeforeFullGC/HeapDumpAfterFullGC VM options, HeapDumpPath and HeapDumpGzipLevel option values are used.
Descriptions for HeapDumpPath and HeapDumpGzipLevel mention only HeapDumpOnOutOfMemoryError
Descriptions for HeapDumpPath and HeapDumpGzipLevel mention only HeapDumpOnOutOfMemoryError