@Override public long estimateMemoryConsumption( String pvName, PVTypeInfo typeInfo, Timestamp start, Timestamp end, HttpServletRequest req) { float storageRate = typeInfo.getComputedStorageRate(); long numSeconds = TimeUtils.convertToEpochSeconds(end) - TimeUtils.convertToEpochSeconds(start); // Add a fudge factor of 3; we generate one event for each event long estimatedMemoryConsumption = (long) (storageRate * numSeconds * 2); return estimatedMemoryConsumption; }