public static void doHeavyPuts(String regionName, int numPuts) {
    Region r = cache.getRegion(SEPARATOR + regionName);
    assertNotNull(r);
    for (long i = 0; i < numPuts; i++) {
      r.put(i, new byte[1024 * 1024]);
    }
  }
Do a rebalance and verify balance was improved. If evictionPercentage > 0 (the default) then we
have heapLRU and this can cause simulate and rebalance results to differ if eviction kicks in
between. (See BUG 44899).
geode-dunit/src/main/java/org/apache/geode/internal/cache/wan/AsyncEventQueueTestBase.java