# Class CIM_DropThresholdCalculationService
extends CIM_Service

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.

### Table of Contents
Hierarchy
Direct Known Subclasses
Class Qualifiers
Class Properties
Class Methods

## Class Hierarchy

CIM_ManagedElement
|
+--CIM_ManagedSystemElement
|
+--CIM_LogicalElement
|
+--CIM_EnabledLogicalElement
|
+--CIM_Service
|
+--CIM_DropThresholdCalculationService

## Direct Known Subclasses

## Class Qualifiers

Name | Data Type | Value
--- | --- | ---
Description | string | 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.
UMLPackagePath | string | CIM::Network::QoS
Version | string | 2.7.0

## Class Properties

### Local Class Properties

Name | Data Type | Default Value | Qualifiers
--- | --- | --- | ---
Name | Data Type | Value
SmoothingWeight | uint32 |
Description | string | 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: average = (old_average*(1-inverse of SmoothingWeight)) + (current_queue_depth*inverse of SmoothingWeight) Implementations may choose to limit the acceptable set of values to a specified set, such as powers of 2.
MaxValue | sint64 | 100000
MinValue | sint64 | 0
PUnit | string | permille
Units | string | Thousandths
TimeInterval | uint32 |
Description | string | 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.
PUnit | string | second * 10^-9
Units | string | NanoSeconds

### Inherited Properties

Name | Data Type
--- | ---
Caption | string
CommunicationStatus | uint16
CreationClassName | string
Description | string
DetailedStatus | uint16
ElementName | string
EnabledDefault | uint16
EnabledState | uint16
Generation | uint64
HealthState | uint16
InstallDate | datetime
InstanceID | string
LoSID | string
LoSOrgID | string
Name | string
OperatingStatus | uint16
OtherEnabledState | string
PrimaryOwnerContact | string
PrimaryOwnerName | string
PrimaryStatus | uint16
RequestedState | uint16
Started | boolean
StartMode | string
Status | string
SystemCreationClassName | string
SystemName | string
TimeOfLastStateChange | datetime
TransitioningToState | uint16
AvailableRequestedStates | uint16[]
OperationalStatus | uint16[]
StatusDescriptions | string[]

## Class Methods

### Inherited Class Methods

Name | Return Type
--- | ---
ChangeAffectedElementsAssignedSequence | uint32
RequestStateChange | uint32
StartService | uint32
StopService | uint32