Package jline.api.sn

Class SnPnAvgRates

java.lang.Object

jline.api.sn.SnPnAvgRates

public final class SnPnAvgRates
extends Object

Place throughput, arrival rate and response time in tokens. A Place is a station and a token is the job it holds, so a firing that consumes two tokens is two departures, not one. The CTMC and SSA analyzers count firing events instead, which for unit arc multiplicities is the same number and for weighted arcs is not: the reported throughput is then not a token rate, and QLen over it is not a sojourn time. This function rescales the Place rows to tokens:

• TN(p,k) tokens consumed from the Place per unit time
• AN(p,k) tokens produced into the Place per unit time
• RN(p,k) QN(p,k) / TN(p,k), Little's law over the Place

Rows that do not belong to a Place are left untouched, so a mixed Queue/Place model keeps its queueing metrics. When the firing rates cannot be recovered from the throughputs the inputs are left unchanged rather than replaced by a guess. Port of matlab/src/api/sn/sn_pn_avg_rates.m

Method Summary

Modifier and Type	Method	Description
static void	snPnAvgRates(NetworkStruct sn, Matrix QN, Matrix TN, Matrix AN, Matrix RN)	Rescales the Place rows of TN, AN and RN to tokens, in place.

Methods inherited from class java.lang.Object

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

Method Details

snPnAvgRates

public static void snPnAvgRates(NetworkStruct sn,
 Matrix QN,
 Matrix TN,
 Matrix AN,
 Matrix RN)

Rescales the Place rows of TN, AN and RN to tokens, in place.

Parameters:

sn - network structure

QN - average queue lengths, i.e. mean token counts at the Places

TN - average throughputs at stations, counting firing events

AN - average arrival rates at stations, or null when not yet computed

RN - average response times at stations, or null when not needed