Response Time Analysis of Distributed Web Systems Using QPNs

Table 5

Parameters of simulations (one class of requests corresponds with Buy Quote requests).

	Element/parameter	Name/value
QPME	FE queues	^a
	BE queues	^b
Software^c	ThreadsPool place	30^d
	ConnectionsPool place	40^e
Client workload		0.06^f
	place^g	100, 200, 300, 400, 500
	Simulation time [s]	300

: number of FE nodes.
: number of BE nodes.
Initial marking per node.
30 threads for one FE node, 90 threads for three FE nodes, 180 threads for six FE nodes, and 270 threads for nine nodes.
40 connections for one BE node, 120 connections for three BE nodes, 240 connections for six BE nodes, and 360 connections for nine nodes.
Client think time equals 16,67 [ms].
^gClient workload based on 15, 30, 45, 60 requests per second.