I was recently asked to comment on the concepts of project assurance, solution assurance and turnoaround. The following is a summary of my response. Continue reading ‘Assurance and turn-around’ »
Posts tagged ‘user’
Table of contents for Performance Model Example
- Performance Model Example
- Example: Function definition
- Example: Defining users and locations
- Example: Usage Definition
- Example: User demand estimation
Location definition
For the purpose of this example the primary locations to be modelled will be the UK, New York, Europe and the primary and secondary data centres. These locations have been chosen to illustrate the use of different usage patterns across time zones, as well as to allow the effect of adding disaster recovery planning to be considered. For later use each of the locations also has a network node defined. In this case the nodes have simply been numbered sequentially for each of the locations. This will be discussed in more detail later. Continue reading ‘Example: Defining users and locations’ »
When designing a set of performance tests it is necessary to consider pauses between user interactions. This is usually referred to as “think time”, and represents the time between the system presenting the results of an action and the next action being taken. If a load test script doesn’t include any think time at all then the system will be bombarded with requests at a rate that isn’t humanly possible. Depending on the system there are likely to be between 10 and 100 times the interactions generated with zero think time than with realistic scenarios. Continue reading ‘Do your users think?’ »
