Overview

Module lb_active_karger

• Description
• Data Types
• Function Index
• Function Details

Copyright © 2013-2015 Zuse Institute Berlin

Version: $Id$

Behaviours: lb_active_beh.

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

References

• D. R. Karger and M. Ruhl, "Simple efficient load balancing algorithms for peer-to-peer systems," in Proceedings of the sixteenth annual ACM symposium on Parallelism in algorithms and architectures, 2004, pp. 36-43.

Description

Data Types

dht_message()

dht_message() = 
    {lb_active, phase1, NodeX :: lb_info:lb_info(), options()} |
    {lb_active,
     phase2,
     HeavyNode :: lb_info:lb_info(),
     LightNode :: lb_info:lb_info()}

my_message()

my_message() = 
    {lb_active_karger_trigger} |
    {cy_cache, [node:node_type()]} |
    {my_dht_response,
     DhtNode :: comm:mypid(),
     {get_state_response, Load :: number()}} |
    dht_node_move:result_message() |
    {simulation_result,
     Id :: integer(),
     ReqId :: integer(),
     {items | requests, LoadChange :: non_neg_integer()}} |
    {pick_best_candidate, Id :: integer()}

options()

options() = 
    [{epsilon, float()} |
     {id, integer()} |
     {simulate} |
     {reply_to, comm:mypid()}]

state()

state() = 
    #state{epsilon = float(),
           rnd_node = [node:node_type()],
           best_candidate =
               [{items | requests,
                 {LoadChange :: non_neg_integer(),
                  node:node_type()}}],
           round_id = non_neg_integer() | nil,
           my_lb_info = lb_info:lb_info() | nil,
           req_ids = [{integer(), node:node_type()}]}

Function Index

Function Details

init/0

init() -> state()

Initialization of module called by lb_active

handle_msg/2

handle_msg(X1 :: my_message(), State :: state()) -> state()

handle_dht_msg/2

handle_dht_msg(X1 :: dht_message(),
               DhtState :: dht_node_state:state()) ->
                  dht_node_state:state()

get_web_debug_kv/1

get_web_debug_kv(State :: state()) -> [{string(), string()}]

Key/Value List for web debug

check_config/0

check_config() -> boolean()

Overview

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