Package jline.examples.java.basic

Class ClusterExamples

java.lang.Object
jline.examples.java.basic.ClusterExamples
public class ClusterExamples extends Object
Demonstrates cluster modelling APIs:
  • The static factories Network.cluster*
  • The Cluster builder with comparison and sweep helpers

  • Constructor Summary

    Constructors
    Constructor
    Description
    ClusterExamples()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static void
    cl_scheduling()
    Compares scheduling disciplines on one cluster, the reference's cl_scheduling.
    static void
    cl_stations()
    Sweeps the number of parallel servers, the reference's cl_stations.
    static void
    ex1_basic()
    Solves a four-PS-server open cluster with random dispatching.
    static void
    ex2_compare_dispatching()
    Compares random vs round-robin vs JSQ dispatching with the builder API.
    static void
    ex3_heterogeneous()
    Three FCFS servers with non-uniform service rates dispatched JSQ.
    static void
    ex4_closed()
    Closed-network variant: 8 jobs cycling between Think and 3 PS servers.
    static void
    ex5_multiclass()
    Two-class open cluster (interactive + batch) on two PS servers.
    static void
    ex6_sweep()
    Sweeps the arrival rate to see how response time grows toward saturation.
    static void
    ex7_mixed()
    Mixed variant: an open class and a closed class share the same two servers.
    static void
    main(String[] args)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • ClusterExamples

      public ClusterExamples()

  • Method Details

    • ex1_basic

      public static void ex1_basic()
      Solves a four-PS-server open cluster with random dispatching.

    • ex2_compare_dispatching

      public static void ex2_compare_dispatching()
      Compares random vs round-robin vs JSQ dispatching with the builder API.

    • ex3_heterogeneous

      public static void ex3_heterogeneous()
      Three FCFS servers with non-uniform service rates dispatched JSQ.

    • ex4_closed

      public static void ex4_closed()
      Closed-network variant: 8 jobs cycling between Think and 3 PS servers.

    • ex5_multiclass

      public static void ex5_multiclass()
      Two-class open cluster (interactive + batch) on two PS servers.

    • ex7_mixed

      public static void ex7_mixed()
      Mixed variant: an open class and a closed class share the same two servers.

    • ex6_sweep

      public static void ex6_sweep()
      Sweeps the arrival rate to see how response time grows toward saturation.

    • cl_stations

      public static void cl_stations()
      Sweeps the number of parallel servers, the reference's cl_stations. The cluster is declared at one station and 1.6 arrivals against a service rate of 1.0 -- unstable as declared, which is the point: the sweep is over the server count that makes it stable, and utilization falls as 1/m while the response time collapses once m passes the offered load.

    • cl_scheduling

      public static void cl_scheduling()
      Compares scheduling disciplines on one cluster, the reference's cl_scheduling. Service is hyperexponential (SCV 4), which is where the disciplines part company: PS is insensitive to the service distribution beyond its mean, FCFS is not, so the queue lengths differ even though the load does not. The simulator is used rather than MVA because FCFS with non-exponential service is outside the product-form assumptions.

    • main

      public static void main(String[] args)