How to Use Performance Testing Reports to Improve Performance

1. Statistics Summary

• Maximum running concurrent users
• Total throughput
• Average throughput
• Average hits per second
• HTTP responses summary

2. Transactions summary

• Total passed transactions
• Total failed transactions

3. HTTP responses summary

• The total amount of HTTP 2XX responses
• The total amount of HTTP 4XX responses
• The total amount of HTTP 5XX responses

4. Running concurrent users graph

5. Response times graph

• The reports contain metrics and statistics described above, a list of issues (with description and links to the statistics section) that occurred during test execution, and a general conclusion about the application's performance.
• The testing team prepares the reports after each iteration of the performance script execution and sends them to the Customer.

Performance Testing Real Time Examples

 Performance Testing:

Types of Performance Testing:

1. Load Test

2. Stress Test

3. Scalability Test

4. Soak Test

5. Load vs Stress

JMeter Works:

Thread Group

Thread count vs Loop count

Duration Assertion

Introduction to JMETER and Performance Testing

 JMeter

• JMeter is an open-source load-testing tool used by developers and performance engineers to measure the performance of web applications.
• It can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types.
• Measure the application performance and response times.

Test Plan: (Top level directory)

• A complete test plan will consist of one or more Thread Groups, logic controllers, sample-generating controllers, Listeners, Timers, Assertions, and configuration elements.

1. Adding elements.
2. Removing elements.
3. Saving test plans.
4. Running test plans.
5. Stopping a test plan(immediate shutdown), Shutdown(graceful shutdown).
6. Logging the info and errors.

Important components of a Test Plan:

1. Thread Group
2. Listeners
3. Timers
4. Assertions

Thread Group:

• The beginning point of any test plan.
• The thread group element controls the number of threads Jmeter will use to execute your test.
• All controllers and samplers must be under a thread group.

Main properties of thread group:

• Set the number of threads (simulation of a number of concurrent users).
• Set the ramp-up period (time taken to threads up and running = ramp-up period/Thread 

Samplers:

• Samplers send requests to the server and collect the response.
• JMeter supports several types of samplers, including HTTP, FTP, JDBC, LDAP and SOAP.

Listeners:

• Listeners can be added to test plans or thread group level.
• Listeners provide a way to view the results of a test in JMeter.
• Listener options - Graph result, view results tree, view result table, aggregate report, aggregate graph, response time graph.