To measure the performance of the server

Understanding LoadRunner · Introduction

LoadRunner Controller User's Guide (Windows)

Chapter 1, page 25

The actions that a Vuser performs during the scenario are described in a Vuser
script. When you run a scenario, each Vuser executes a

Vuser script

. The Vuser

scripts include functions that measure and record the performance of the server
during the scenario.

To measure the performance of the server, you define

transactions

. Transactions

measure the time that it takes for the server to respond to tasks submitted by

Vusers. For instance, you can define a transaction that measures the time it takes

for the server to process a request to view the balance of an account and for the

information to be displayed at the ATM.

You insert

rendezvous points

into Vuser scripts to emulate heavy user load on the

server.

Rendezvous points

instruct multiple Vusers to perform tasks at exactly the

same time. For example, to emulate peak load on the bank server, you insert a

rendezvous point to instruct 100 Vusers to simultaneously deposit cash into their

accounts.

You use the

LoadRunner

Controller

to manage and maintain your scenarios. Using

the Controller, you control all the Vusers in a scenario from a single workstation.

When you execute a scenario, the LoadRunner Controller distributes each Vuser
in the scenario to a

host

. The host is the machine that executes the Vuser script,

enabling the Vuser to emulate the actions of a human user.

Vuser Scripts

Transactions

Rendezvous
points

Controller

Hosts