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The ramp-up period tells JMeter how long to take to “ramp-up” to the full number of threads chosen.If 10 threads are used, and the ramp-up period is 100 seconds, then JMeter will take 100 seconds to get all 10 threads up and running. Each thread will start 10 (100/10) seconds after the previous thread was …
This is the very first options of Thread Group element, but not many people pay attention to it. It determines what happens if a sampler error occurs, either because the sample itself failed or an assertion failed. The possible choices are:Continue (default)- ignore the error and continue with the test and run next sampler.Start Next …
Thread Group Element – Action to be taken after a sampler error Read More »
The threads or users are represented in JMeter through groups of threads.Each group of threads represents a set of system users, and they are used to execute the performance tests to simulate the concurrence of users on the application.
A test plan in JMeter defines a tree structure of how, when and what to test, providing for the execution of a sequence of actions.The element categories that JMeter handles are:
JMeter is a free and open source tool created by the Apache Software Foundation to carry out performance testing. The tool is a Java-based application and was originally designed to test web applications.It allows for load simulations to be carried out through different types of applications and protocols:● Web – HTTP, HTTPS (Java, NodeJS, PHP, …
1. Requirement specification / use case documents2. architectural diagrams3. interview with business stakeholders (functional experts, business analysts, technical SMEs, etc)4. Questionnaire answered by Beta Users5. Marketing brochures / release manuals6. Performance benchmarks of similar applications7. Use case prioritization index8. Analysis of end user access pattern by releasing the application to beta users
1. Performance modelling is the process of creating performance models2. Performance models are built early, usually defined during design phase and continuously refined throughout SDLC phase3. Performance models are built using analytical modelling (queuing theory) or simulation modelling or statistical modelling techniques.4. performance models are used to evaluate architectural or design trade offs before building …
1. System understanding2. identify key use cases3. identify transactions, test data and think times to be used4. Identify user distribution levels5. identify current and projected user load targets / transactional volume targets6. Create workload model and validate using Little’s Law
1. Understand the objective for workload model creation (performance testing or capacity planning)2. Understand system objectives, application landscape and end users of the system3. Understand the business drivers that impact the end user load on the system.4. Identify the top critical use cases and navigation patterns5. Identify the user load distribution level across use cases …
What are the key details required for developing the workload model? Read More »
The HTTP protocol used to exchange information files on the web is used to maintain the cookies. There are two types of the HTTP protocol. Stateless HTTP and Stateful HTTP protocol. The stateless HTTP protocol does not keep any record of previously accessed web page history. While Stateful HTTP protocol does keep some history of …