Package jline.api.sn

Class SnJoinDroprate

java.lang.Object

jline.api.sn.SnJoinDroprate

public final class SnJoinDroprate
extends Object

Rate at which sibling tasks are discarded at each Join.

Port of matlab/src/api/fj/sn_join_droprate.m.

Method Summary

Modifier and Type	Method	Description
static Matrix	snJoinDroprate(NetworkStruct sn, Matrix TN, Matrix AN)	A Join is the one station where the loss identity ArvR - Tput does NOT hold, because the two rates are in different units: AN counts the SIBLINGS offered to the join (N per parent job) while TN counts the PARENT jobs released by it (one per synchronisation).

Methods inherited from class java.lang.Object

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

Method Details

snJoinDroprate

public static Matrix snJoinDroprate(NetworkStruct sn,
 Matrix TN,
 Matrix AN)

A Join is the one station where the loss identity ArvR - Tput does NOT hold, because the two rates are in different units: AN counts the SIBLINGS offered to the join (N per parent job) while TN counts the PARENT jobs released by it (one per synchronisation). Reading ArvR - Tput there reports (N-1)/N of the offered traffic as lost at every join, standard joins included, when a standard join loses nothing at all.

The siblings a join actually consumes are K per synchronisation, where K is the quorum (K = N on a standard join), so DropRateJoin = max(0, AN - K*TN), which is 0 for a standard join and (N-K)*TN for a quorum.

This is the DERIVED value, exact given TN and AN. A solver that MEASURES the discards on its own sample path (SolverLDES) reports its own.

Parameters:

sn - the network structure

TN - station throughputs

AN - station arrival rates

Returns:

an (nstations x nclasses) matrix, zero away from the Join rows