private void populateFirst0k_10Kbwrites() {

    final byte[] value = new byte[ENTRY_SIZE];
    Arrays.fill(value, (byte) 77);

    for (int i = 0; i < 10000; i++) {
      region.put("" + i, value);
    }

    // Now get 0-9999 entries
    long startTimeGet = System.currentTimeMillis();
    for (int i = 0; i < 10000; i++) {
      region.get("" + i);
    }
    long endTimeGet = System.currentTimeMillis();
    if (debug) {
      System.out.println(" done with getting 0-9999 entries fuatling in from current oplog");
    }

    // Perf stats for get op
    float etGet = endTimeGet - startTimeGet;
    float etSecsGet = etGet / 1000f;
    float opPerSecGet = etSecsGet == 0 ? 0 : (10000 / (etGet / 1000f));
    float bytesPerSecGet = etSecsGet == 0 ? 0 : ((10000 * ENTRY_SIZE) / (etGet / 1000f));

    String statsGet =
        "etGet=" + etGet + "ms gets/sec=" + opPerSecGet + " bytes/sec=" + bytesPerSecGet;
    log.info(statsGet);
    if (debug) {
      System.out.println("Perf Stats of get which is fauting in from current Oplog :" + statsGet);
    }

  }
1) Performance of Get Operation for Entry faulting in from current Op Log 2) Performance of Get
operation for Entry faulting in from previous Op Log 3) Performance of Get operation for Entry
faulting in from H Tree
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/diskPerf/DiskRegionOverflowAsyncRollingOpLogJUnitTest.java