// Copyright (c) 2005 DMTF.  All rights reserved.
// <change cr="ArchCR00066.004" type="add">Add UmlPackagePath
// qualifier values to CIM Schema.</change>
// <change cr="ArchCR00089.003" type="add">Add PUnit qualifier values
// to Units qualifier values.</change>
// ==================================================================
//  CIM_DropThresholdCalculationService
// ==================================================================
   [Version ( "2.7.0" ), 
    UMLPackagePath ( "CIM::Network::QoS" ), 
    Description ( 
       "This class calculates an average depth for a queue, based on a "
       "smoothing weight and a sampling time interval. The latter are "
       "properties of this Service, describing how it operates and its "
       "necessary parameters. The Service does the calculation on "
       "behalf of a RED dropper (as indicated by the association, "
       "CalculationServiceForDroppper). A "
       "DropThresholdCalculationService is always associated to the "
       "single queue that it examines via the Calculation BasedOnQueue "
       "relationship." )]
class CIM_DropThresholdCalculationService : CIM_Service {

      [Description ( 
          "This property is a 32-bit unsigned integer, ranging "
          "between 0 and 100,000 - specified in thousandths. It "
          "defines the weighting of past history in affecting the "
          "calculation of the current average queue depth. The "
          "current queue depth calculation uses the inverse of this "
          "value as its factor, and one minus that inverse as the "
          "factor for the historical average. The calculation takes "
          "the form: \n"
          "average = (old_average*(1-inverse of SmoothingWeight)) \n"
          "+ (current_queue_depth*inverse of SmoothingWeight) \n"
          "Implementations may choose to limit the acceptable set "
          "of values to a specified set, such as powers of 2." ), 
       Units ( "Thousandths" ), 
       MinValue ( 0 ), 
       MaxValue ( 100000 ), 
       PUnit ( "permille" )]
   uint32 SmoothingWeight;

      [Description ( 
          "This property is a 32-bit unsigned integer, and defines "
          "the number of nanoseconds between each calculation of "
          "average/smoothed queue depth. When this property is not "
          "specified, the CalculationService may determine an "
          "appropriate interval." ), 
       Units ( "NanoSeconds" ), 
       PUnit ( "second * 10^-9" )]
   uint32 TimeInterval;


};