core/src/main/java/com/orientechnologies/orient/core/storage/impl/local/statistic/OSessionStoragePerformanceStatistic.java
public void stopFuzzyCheckpointTimer() {
    if (writCacheCountersHolder == null)
      writCacheCountersHolder = new WritCacheCountersHolder();

    final long endTs = nanoTimer.getNano();
    final long timeDiff = (endTs - timeStamps.pop());

    writCacheCountersHolder.fuzzyCheckpointCount++;
    writCacheCountersHolder.fuzzyCheckpointTime += timeDiff;

    makeSnapshotIfNeeded(endTs);
  }
public void stopFuzzyCheckpointTimer() {
    if (writCacheCountersHolder == null)
      writCacheCountersHolder = new WritCacheCountersHolder();

    final long endTs = nanoTimer.getNano();
    final long timeDiff = (endTs - timeStamps.pop());

    writCacheCountersHolder.fuzzyCheckpointCount++;
    writCacheCountersHolder.fuzzyCheckpointTime += timeDiff;

    makeSnapshotIfNeeded(endTs);
  }
Stops and records results of timer which counts how much time was spent on fuzzy checkpoint operation.