Performance Test Slideshow R E C E N T

• Determine the usability/effectiveness of an application under load.

• Detect bottlenecks before a new system or upgrade is deployed.

• Tune for better performance

The peace of mind that it will work on go-live day

alone justifies the cost of performance testing.

Why do we Performance Test..?Why do we Performance Test..?

What is Performance Testing?• Performance Testing Determines Speed Scalability Stability Confidence

… while focusing on User Expectations System Constraints Costs

Specifically, it answers: How many…? How much…? What happens if…?

WHY NOT MANUALLY PERFORMANCE TEST?

Manual performance testing can be done by gathering numerous folks together and synchronizing executing

the transactions.

The drawback is that measuring response time depends on user accuracy. And it is very hard to

synchronize the testing AND repeat the tests.

And the coordination problem is expanded if you think about including international users.

AUTOMATED PERFORMANCE TESTING

UserSimulation

Controller Web Server

Application Server DatabaseInternet/

WAN

Replaces real users with virtual users

Generate a consistent, measurable, and repeatable load, managed from a single point of control

Efficiently isolates performance bottlenecks

Performance Test ProcessPerformance Test Process“Evaluate System”“Evaluate System”

Evaluate System

This is the most important process because it involves …

(1) predicting actual user experience

(2) accessing any system limitations

(3) defining stakeholder expectations

Performance Test ProcessPerformance Test Process““Draft test scripts/scenario”Draft test scripts/scenario”

Evaluate System The scripts will contain transactions which are the most intensive activities performed on the application.

Draft test scripts/ test scenario

Performance Test ProcessPerformance Test Process“Execute Performance Tests”“Execute Performance Tests”

Evaluate System

Draft test scripts/ test scenario

Execute Performance Test

LOAD TESTS are the end to end performance test under anticipated

production load.

STRESS TESTS determine the load under which a system fails and how it

recovers from failure.

DURATION TESTS are test with a constant load over a period between 8

and 24 hours to determine if an application’s performance degrades

over an extended period of time.

BASELINE TESTS is the execution, validation, and debugging of scripts collectively in a test scenario. The

results will be used for comparison with future testing results.

Performance Test ProcessPerformance Test Process“Entire Process”“Entire Process”

Execute Performance Test

Draft test scripts/ test scenario

SLA Acceptable?

YESCreate

Performance Test Certification

Evaluate System

Review Results

NO / Tune Server

Response Time Degradation Curve

Performance Test Services

DatabaseWeb Server Application ServerInternet/WANLoad GeneratorController Load Balancer

EJB JDBC JSP Sitraka

JMonitor

Oracle MSSQL

Server DB2

Network Web Servers

App Servers Java

3270 5250 VT100

Legacy

Oracle MS SQLServer DB2 ODBC

Databases

EJBs CORBA COM RMI MQSeries

Middleware

Web Services HTTP(S) XML Citrix ICA

Web

PeopleSoft Oracle

ERP/CRM

Protocols

MonitorsDiagnostics

Operating Systems Databases

Windows Unix Linux

SNMP WAN

Emulation

MS IIS iPlanet Apache

BEA WebLogic

IBM WebSphere

ATG Dynamo iPlanet App

Server

J2EE .NET

Platforms

We have the ability to mimic many protocols. Here is a list of the protocols.

The Diagnostics tool provides a set of Diagnostics modules that

trace, time, and troubleshoot end-user transactions across

ALL tiers.

And while a testing is executing we will monitor your servers!

Performance Test Triggers?

• New Systems• Increasing Number of Users• New Functionality• Software Upgrades• Operating System Upgrades• Hardware Upgrades• Infrastructure Upgrades/Changes• Slow application response

Here are some examples of what should trigger a performance test execution!

Performance Test ToolboxOur team has the latest and greatest tools…!!!

How do you engage our team?

Answer: Just open up a Performance Test SOS ticket…

http://eaptsos

More information about performance testing is on thehttp://tim.turner.com/tso/ea/groups/sharedsvc/perftest/default.aspx