Slide 45
Slide 45 text
PDQ Examples Web Application
Preliminary PDQ Model
CreateNode(node1, CEN, FCFS);
CreateNode(node2, CEN, FCFS);
CreateNode(node3, CEN, FCFS);
SetDemand(node1, work, Swebs);
SetDemand(node2, work, Sapps);
SetDemand(node3, work, Sdbms);
Solve(EXACT);
xc[n]<-n
yc[n]<-GetThruput(TERM, "ebiz-tx")
}
plot(xc, yc, type="l", lwd=1, col="blue", ylim=c(0,120), xlab="Clients (N)", ylab="Gets/Sec X(N)")
Dws
Das
Ddb
N clients
Z = 0 ms
Web Server App Server DBMS Server
Requests Responses
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