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What kind of performance do you need to pay attention to when testing the performance of a software?

Let's think about what roles are involved in software design, deployment, use, and maintenance, and then consider what performance points these roles focus on, and what should we focus on as a software performance test engineer?

1. The purpose of developing software is to let users use it. Let's first analyze what performance users need to pay attention to from the user's point of view.

For users, when clicking a button, link or issuing an instruction starts, until the system shows the result in a form perceived by the user, the time consumed by this process is the user's intuitive impression of the performance of the software. That is, what we call response time, when the response time is small, the user experience is very good, of course, the response time of user experience includes personal subjective factors and objective response time, when designing software, we need to consider how to better combine these two parts to achieve the best user experience. For example, when a user queries a large amount of data, we can show the extracted data to the user and continue to retrieve the data while the user is looking at it. At this time, the user does not know what we are doing in the background.

The user is concerned about the response time of the user's action.

2. Consider the performance points that need to be concerned from the point of view of the administrator.

1. Response time

2. Whether the server resources are reasonable

3. Whether the use of application server and database resources is reasonable

4. Can the system be extended?

5. How many users can the system support and what is the maximum business capacity of the system?

6. Where are the possible bottlenecks in system performance

7. Replacing those devices can improve performance

8. Can the system support 7 × 24-hour business access?

3. Consider it from the point of view of the developer (designer).

1. Whether the architecture design is reasonable

2. Whether the database design is reasonable.

3. Whether there are performance problems in the code

4. Whether there is any unreasonable memory usage in the system

5. Whether there is an unreasonable thread synchronization mode in the system

6. Whether there is unreasonable resource competition in the system.

From the point of view of the performance test engineer, we need to pay attention to all the above performance indicators and fine-tune them according to the actual situation.

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