The document provides information on performance testing processes and tools. It outlines 8 key steps: 1) create scripts, 2) create test scenarios, 3) execute load testing, 4) analyze results, 5) test reporting, 6) performance tuning, 7) communication planning, and 8) troubleshooting. It also discusses tools like LoadRunner, Controller, and Analysis for executing and analyzing tests. The document emphasizes having a thorough test process and communication plan to ensure performance testing is done correctly.
How to make a Load Testing with Visual Studio 2012Chen-Tien Tsai
About Load Testing
Performance testing
Stress testing
Load testing
Create Visual Studio Load Testing Solution
Add Web Perfomance Testing
Create by Wizard(record action)
Create by Code
Add Load Testing
Configure Scenario setting
Configuration Run setting
Open Load Testing Report
Tips for setting
One more thing about Load Testing
How to make a Load Testing with Visual Studio 2012Chen-Tien Tsai
About Load Testing
Performance testing
Stress testing
Load testing
Create Visual Studio Load Testing Solution
Add Web Perfomance Testing
Create by Wizard(record action)
Create by Code
Add Load Testing
Configure Scenario setting
Configuration Run setting
Open Load Testing Report
Tips for setting
One more thing about Load Testing
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Presentation delivered by Matt Done, Head Of Platform Development at expanz Pty. Ltd. during DDD Sydney event on 2 July 2011.
Matt demonstrates what it takes to setup a highly sophisticated load test, using the Azure environment and how to use the results to optimise a fully blown application development platform and application server running on Azure.
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Similar to QSpiders - Installation and Brief Dose of Load Runner (20)
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Data is a useful information
Which helps to make a decision
Set of information of any entity is known as data
Databases support storage and manipulation of data
Controlling test runs can help you to identify and eliminate defects in your tests.
The Debug Viewer tabs can display the values of variables or objects in the main script of the current action or in a selected subroutine.
Synchronizing Your Test
Tests can be synchronized either of the ways
Synchronization point
Exist or Wait statements
Increase the default timeout settings
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QSpiders - Installation and Brief Dose of Load Runner
1.
2.
3. Click OK button to proceed with the installation of missing prerequisites. If you already
have .net framework 4.0 or above, you’ll not see this screen, rather the setup will show a
splash screen for a moment till it calculates space requirements. Refer below for a snapshot.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14. Business
Process
Total
Users
(%)
Avg Number
of concurrent
users
Peak number
of concurrent
users
Preferred
Response
Time (Total,
including
think time)
Unacceptable
Response
Time (Total ,
including
think time)
Browse 20% 100 2000 2-3 min > 5 min
Time Entry 60% 200 6000 3 min > 5 min
Update
personal
info.
20% 50 1000 1 min > 3 min
Total 100% 350 9000
16. It is the traffic model of the application
The better the documentation of the business processes,
the better the test scripts and scenarios.
Save time on script and scenario creation
Good business profile can make it possible to reuse
existing load testing scripts and results later.
- Business Profile is the basis for load testing
17. 2. Create Scripts
- Automate business processes in LoadRunner VUGen (Virtual User
Generator):
Scripts are C, C++-like code
Scripts are different with different protocol/technology
LoadRunner has about 50 protocols, including WAP
- Record user actions
Need assistance of SME/Functional Testing group
- Add programming and test data in the scripts
- E.g. add correlation to handle dynamic data, e.g. session id
- Test data may need lot of work from project team
19. 3. Create Test Scenario
- Build test scenario according to usage information in Business
Profile
- Load Calculation
- Can use rendezvous point, IP Spoofing, etc.
- Run-Time setting
Think time
Pacing
Browser Emulation: simulate browser cache, new user each iteration
Browser version, bandwidth, etc.
20. 4. Execute Load Testing
• Execute test scenarios with automated test scripts in
LoadRunner Controller
• Isolate top time transactions with low load
• Overdrive test (120% of full load) to isolate SW & HW
limitations
• - Work with Internal Support Team to monitor the whole
system, e.g., web server, DB server, middleware, etc.
21. system - % total processor time
Memory - page faults/sec
Server work queues - bytes transferred/sec
HTTP Response
Number of connections
• Support team will have better ideas for what to monitor
• Individual write-up is highly suggested as part of test report
• ---need to get csv files, then import to LoadRunner
22. 5. Analyze Test Result - Analysis
- Collect statistics and graphs from LoadRunner
- Report results
- Most commonly requested results:
Transaction Response time
Throughput
Hits per sec
HTTP response
Network Delay
*Server Performance
- Merge graphs to make it more meaningful
Transaction response time under load
Response time/Vuser vs CPU utilization
Cross scenario graphs
23. 6. Test Report
- Don’t send LoadRunner result and graphs
directly
- Send summary to the whole team
- Report key performance data and back end
performance data
- Add notes for each test run
- Keep test history: for team to compare test runs
24. 7. Performance Tuning
- Help identify the bottlenecks and degradation
points to build an optimal system
- Hardware, Configuration, Database, Software, etc
- Drill down on transaction details,
- e.g. webpage breakdown
- Diagnostics
- Show Extended Log to dev team
- Data returned by server
- Advanced Trace: Show logs of all VUser messages
and function calls
25. 8. Communication Plan
- Internal Support Team:
- - PM, BA, environment / development /
architect, network, DBA, functional test
lead, etc.
- Resource plan
26. Test Planning, Script Creation – 4 weeks
Test Execution – 4 weeks
Trail run - 2 days
1. Round 1 – Load Testing: Response time with SLA target load:
1 week
2. Round 2 – Stress Testing: find breaking point: 1 week
3. Round 3 – Duration (Reliability) test: 2 days
4. More performance tuning – 3 days
5. Document and deliver final report – 2-3 days
27. Scripting: VUGen (Virtual User Generator)
Performance test execution:
Controller – build test scenarios according to
business profile and load calculation
Load Generator – run virtual users
Performance test result analysis
Analysis
provides test reports and Graphs
Summarize the system performance
28. Web-enabled global load testing tool
Performance Testing team can manage
multiple, concurrent load testing projects
across different geographic locations
User Site - conduct and monitor load tests.
Privilege Manager- manage user and project access rights
Administration Site - for overall resource management
and technical supervision
29. - Pinpoint Root Cause
– Solve tough problems
Memory leaks and trashing
Thread deadlock and synchronization
Instance tracing
Exceptions
30. • Start with monitoring of business process
• Which transactions are problematic
• Eliminate system and network components
• Infrastructure monitors and metrics
• Isolate application Tier and method
• Triage (using Transaction Breakdown)
• Correct behavior and re-test
•
•
31. • WebSphere J2EE/Portal
Server
• WebLogic J2EE/Portal
Server
• JBoss, Tomcat, JServ
• Oracle Application
Server J2EE
MS .NET
Generic/Custom JAVA
SAP Net/Weaver
J2EE/Portal
Oracle 11i Applications
Siebel
32. 80% of IT Organizations experience failures in apps that
passed the test phases and rolled into production
HyPerformix – Performance Engineering
Production line: Designer, Optimizer and Capacity
Manager
HyPerformix Optimizer (Capacity Planning): can bridge
the gap between testing and production environments
and leverage load test data to accurately show how the
application will perform when in production.
33. Configuration sizing, Capacity planning
Create production-scale models
– Perf. Test team and Architect team work together
Load test and production perf. data are
seamlessly integrated with Optimizer
Ensure capacity is match to current and future
business requirements
Reduce risk before application deployment
34. Performance testing is critical. Competition in market is
high: customer switch cost is low, cost to keep
customers is high
Performance Testing can protect revenue by helping to
isolate and fix problems in the software infrastructure
Improve availability, functionality, and scalability of
business critical applications
Ensure products are delivered to market with high
confidence that system performance will be acceptable
Proactive performance testing can decrease costs of
production support and help desk
A good Performance Testing Process is essential to get
performance testing done right and on time!