Fundamental @ Load testing Types of Load testing Introduction @ WAPT tool Navigation of WAPT tool Parametrize in WAPT Report analyis

1. WAPT
A load testing solution for web sites

2. What is load testing?
In short, it is a simulation of multiple users visiting a web site at the same
time and working with it concurrently.
Such general definition makes load testing a blanket term for several
different types of testing.

3. Types of load testing
Performance
testing
Capacity
testing
Volume
testing
Endurance
testing
Stress
testing
Regression
testing

4. Types of load testing
Performance testing
We gradually increase the load by adding more and more virtual users to the
test and check the performance parameters of the system at any test phase.
The main things we monitor are:
• Web site response time;
• Number of processed requests per second;
• Error rate.

5. Types of load testing
Capacity testing
This type of test replies to the most common question in load testing: how
many concurrent users the web site can handle while maintaining good
response time and error rate.
Again, we add virtual users gradually, but in this case we know the performance
criteria in advance and just need to check that they are observed.

6. Types of load testing
A typical problem revealed by a performance or capacity test is
a bottleneck. Even though it is mostly a technical term, it can
be thought of as a thin section within the data workflow.
Your web application can consist of several modules used to process requests.
If one of them has a technical limitation, it limits the performance of the whole
system.

7. Types of load testing
Stress testing
Every system has a capacity limit. When the load goes beyond it, the web site
starts responding very slowly and even produce errors.
The purposes of stress testing are:
• Find the capacity limit;
• Check that when it is reached, the web site handles the stress correctly:
produces graceful overload notifications and does not crash;
• When the load is reduced back to regular level, the web site returns to
normal operation retaining the performance characteristics.

8. Types of load testing
Volume testing
If your application can upload files, upload the largest ones. If it does the search,
try generating long results.
Try to maximize the amount of processed data and the complexity of each
transaction. This will be the volume testing.

9. Types of load testing
Endurance testing
This type of testing (also called “soak testing”) is used to check that the system
can stand the load for a long time or a large number of transactions.
It usually reveals various types of resource allocation problems. If a small memory
leak is present, it is not evident on a quick test, but will influence the performance
after a long time.
For endurance testing it is recommended to use changing periodic load to provoke
resource reallocation.

10. Types of load testing
Regression testing
Make the load testing a part of your regular development process by creating
regression load tests and applying them to every new version of your
application.

11. Types of load testing
Performance
testing
Capacity
testing
Stress
testing
Many testing goals – one solution
Volume
testing
Endurance
testing
Regression
testing

12. WAPT
You can design tests as easy as using a browser. Just navigate through the
web site to record a user session. WAPT will replay it with thousands
virtual users during the test.
• No scripting is necessary.
• No programming background is required.
• The efficiency of your work is our priority.

13. WAPT
Each session is recorded to a virtual user profile as a sequence of HTTP
requests. You can select a profile and edit its properties.
In the same view you can select a request and edit its parameters, headers, page
elements and other options.

14. WAPT
The test may include different profiles
to emulate different types of users.
The load is flexibly specified: you can select how many users of
each type should participate.

15. WAPT
And you can make the number of virtual users change. This way you can emulate
different types of load.
It can be constant
throughout the
test…
Growing…
Or periodic.

16. WAPT
Automatic cookie and session
variables handling will make each
user session correct and
realistically emulated.

17. WAPT
With couple clicks you can create data-driven tests by specifying different names,
passwords and input data for different users.

18. WAPT
You can test secure HTTPs
pages and web sites requiring
all types of authentication
and client certificates.

19. WAPT
On the test completion you get the report containing comprehensive statistical
information, including response times, throughput parameters, bandwidth usage,
errors appeared at each test phase and much more.

20. WAPT
You are not limited to analyzing rows of numbers with statistical data. WAPT can
represent it in form of dynamic resizable charts.
Using them, you can track down the correlation of any performance parameters with
the created load at any test moment.

21. WAPT
When your web application starts producing errors on test execution, you may need
to have the detailed information on each user session and each request in order to
track down the problem.
In WAPT this
information can be fully
logged during the test
and represented in a
convenient structured
form after the test
completion. You can
easily navigate between
users, sessions and
reported errors.

22. WAPT Pro
Many of our customers use load testing on a regular basis as a part of their
development process. They often need to perform the testing from different
locations and create significant test load emulating thousands users.
To address the need for a more powerful, flexible and precise testing tool we offer
the professional version of our product.
It can use several systems for load generation, overcoming any limits for the
maximum emulated test load.
But this is not the only benefit…

23. WAPT Pro
WAPT Pro consists of the workplace component and multiple load agents that can
be installed anywhere and managed remotely.
Such location independent distributed configuration makes WAPT Pro an ideal
cloud-ready solution.

24. WAPT Pro
These days a typical web site may include multiple components, such as load
balancers, web servers, application servers, databases, etc.
When applying a load test to such a complex system, the classical black-box approach
will hardly work. To track down the performance problems, isolate bottlenecks and
optimize the hardware configuration, it is often required to monitor the behavior of
each system component under load.
WAPT Pro uses WMI and SNMP interfaces to collect the
exhaustive performance information directly from each server
and database.

25. WAPT Pro
Web sites featuring rich AJAX content often require advanced parameterization
techniques. WAPT Pro guarantees that any such web site can be fully tested by
providing a possibility to prepare dynamic request parameters and post-process
server responses with help of custom JavaScript code.
While the Pro version follows the same
intuitive GUI approach to the test
creation and execution, it adds the
scripting possibility for advanced users
as an option that can be selectively
applied.

26. WAPT Extension Modules
As more and more new technologies are becoming standards for web development,
we are working hard to address the requirements for load testing of RIA (Rich
Internet Application) web sites.
For each specific technology we create a
special module that extends the
capabilities of our products.
The benefits provided by these modules
include:
• Support for binary data formats;
• Visual representation of embedded
structures;
• Automatic parameterization of
protocol-specific data.

27. WAPT Extension Modules
Right now we have the following modules available:
Module for ASP.NET testing
Module for Adobe® Flash® testing
Module for JSON format
More coming soon…

28. Thank you!! 