Module lb_info

Description
Data Types
Function Index
Function Details

For active load balancing: - contains information about a node - provides functions to evaluate an lb operation.

Version: $Id$

Authors: Maximilian Michels (michels@zib.de).

Description

For active load balancing: - contains information about a node - provides functions to evaluate an lb operation

Data Types

erlang_timestamp()

erlang_timestamp() = 
    {MegaSecs :: non_neg_integer(),
     Secs :: 0..999999,
     MicroSecs :: 0..999999}

lb_info()

abstract datatype: lb_info()

load()

load() = unknown | number()

Function Index

bound/3
get_items/1
get_load/1
get_load_change_jump/5	Calculates the change in Variance no dht size available.
get_load_change_jump/6	Calculates the change in Variance dht size available.
get_load_change_slide/4	Calculates the change in Variance no dht size available.
get_load_change_slide/5	Calculates the change in Variance dht size available.
get_node/1
get_oldest_data_time/1
get_reqs/1
get_succ/1
get_target_load/3	The number of db entries the heavy node will give to the light node (weighted).
get_target_load/4	The number of db entries the heavy node will give to the light node.
get_time/1
is_succ/2
is_valid/1
neighbors/2
new/1	Creates a new record to hold essential load balancing values.

Function Details

new/1

new(NodeDetails :: node_details:node_details()) -> lb_info()

Creates a new record to hold essential load balancing values

get_load/1

get_load(LBInfo :: lb_info()) -> load()

get_reqs/1

get_reqs(LBInfo :: lb_info()) -> load()

get_items/1

get_items(LBInfo :: lb_info()) -> load()

get_node/1

get_node(LBInfo :: lb_info()) -> node:node_type()

get_succ/1

get_succ(LBInfo :: lb_info()) -> node:node_type()

get_time/1

get_time(LBInfo :: lb_info()) -> erlang_timestamp()

is_succ/2

is_succ(Node1 :: lb_info(), Node2 :: lb_info()) -> boolean()

neighbors/2

neighbors(Node1 :: lb_info(), Node2 :: lb_info()) -> boolean()

is_valid/1

is_valid(Info :: lb_info()) -> boolean()

get_target_load/4

get_target_load(X1 :: items | requests,
                Op :: slide | jump,
                HeavyNode :: lb_info(),
                LightNode :: lb_info()) ->
                   non_neg_integer()

The number of db entries the heavy node will give to the light node

get_target_load/3

get_target_load(Op :: slide | jump,
                HeavyNode :: load(),
                LightNode :: load()) ->
                   non_neg_integer()

The number of db entries the heavy node will give to the light node (weighted)

get_load_change_slide/4

get_load_change_slide(Metric :: items | requests,
                      TakenLoad :: non_neg_integer(),
                      HeavyNode :: lb_info(),
                      LightNode :: lb_info()) ->
                         LoadChange :: number()

Calculates the change in Variance no dht size available

get_load_change_slide/5

get_load_change_slide(Metric :: items | requests,
                      TakenLoad :: non_neg_integer(),
                      DhtSize :: pos_integer(),
                      HeavyNode :: lb_info(),
                      LightNode :: lb_info()) ->
                         LoadChange :: number()

Calculates the change in Variance dht size available

get_load_change_jump/5

get_load_change_jump(Metric :: items | requests,
                     TakenLoad :: non_neg_integer(),
                     HeavyNode :: lb_info(),
                     LightNode :: lb_info(),
                     LightNodeSucc :: lb_info()) ->
                        LoadChange :: number()

Calculates the change in Variance no dht size available

get_load_change_jump/6

get_load_change_jump(Metric :: items | requests,
                     TakenLoad :: non_neg_integer(),
                     DhtSize :: pos_integer(),
                     HeavyNode :: lb_info(),
                     LightNode :: lb_info(),
                     LightNodeSucc :: lb_info()) ->
                        LoadChange :: number()

Calculates the change in Variance dht size available

get_oldest_data_time/1

get_oldest_data_time(Other :: [lb_info()]) ->
                        OldestTime :: erlang_timestamp()

bound/3

bound(LowerBound :: number(),
      Value :: number(),
      UpperBound :: number()) ->
         number()

Generated by EDoc, Apr 22 2017, 16:02:54.