core/src/main/java/com/orientechnologies/orient/core/storage/impl/local/statistic/OSessionStoragePerformanceStatistic.java
public void pushComponentCounters(String name, PerformanceCountersHolder holder) {
    if (snapshot == null)
      return;

    final PerformanceCountersHolder countersHolder = snapshot.countersByComponent.get(name);

    if (countersHolder != null) {
      countersHolder.pushData(holder);
    }
  }
public void pushComponentCounters(String name, PerformanceCountersHolder holder) {
    if (snapshot == null)
      return;

    final PerformanceCountersHolder countersHolder = snapshot.countersByComponent.get(name);

    if (countersHolder != null) {
      countersHolder.pushData(holder);
    }
  }
Takes performance data for component from last snapshot and aggregates them with data passed inside method as parameter. Result
of aggregation of performance data is returned inside of passed in performance data.

@param name   Name of component for which performance data are gathered.
@param holder Performance data for given component.