Introduction to Performance Testing and a Quick Guide for Beginners Using RunnerGo

Hello everyone, I am a Beijing‑based tester with ten years of experience, and today I share some personal insights on performance testing and how beginners can quickly get started.

1. What is performance testing?

In a nutshell: continuously exploring the balance between system design and resource consumption through different scenario performances.

More specifically, it involves probing the performance of a system or component in a test environment to verify whether the production performance meets the expected requirements, discover possible bottlenecks, improve and optimize the system, and enhance its scalability and stability.

2. Purpose of performance testing

In a nutshell: to identify and eliminate performance bottlenecks in an application.

Specifically:

• Verify that the system meets expected requirements;

• Verify how the system behaves under high pressure;

• Verify that the system can run continuously and stably;

• Detect bottlenecks and their causes;

• Find the optimal balance between system design and resources and improve performance.

3. What performance testers need to focus on

Concurrency, throughput, response time, error rate.

Common performance test types: load testing, stress testing, concurrency testing.

4. How to conduct performance testing

The performance testing workflow includes: test tool preparation — requirement confirmation — test environment preparation — script design — test execution — result analysis.

Test tool preparation: The market’s mainstream performance testing tools include JMeter, LoadRunner, and RunnerGo. For beginners, RunnerGo is recommended because it is easier to operate than JMeter or LoadRunner, requires only registration, and provides detailed test reports without additional plugins.

Requirement confirmation: Define the test purpose, the system under test, the test scenario, and the performance metrics; these guide script creation.

Test environment preparation: RunnerGo runs in the cloud; you only need to register on its website (https://www.runnergo.com/) and start using it.

Script design: Based on the requirements, determine the scenarios, interfaces, and performance indicators. RunnerGo supports importing APIs from various debugging tools with one click.

After importing the APIs, RunnerGo allows you to drag and connect them on a canvas to configure scenarios; each interface flow represents a scenario.

According to the requirements, select a pressure‑test mode; RunnerGo provides built‑in modes that can be chosen with a single click and configured with the desired parameters.

After selecting the mode, a simple performance test script is ready, and you can start testing.

RunnerGo provides real‑time test reports; while the script runs, you can analyze the report based on performance metrics.

Key takeaways from this simple performance test:

• Execute the test multiple times and take the average for more accurate results.

• Simulate real‑world usage scenarios as closely as possible.

• Do not rely solely on average response time; consider distribution.

• Throughput is meaningful only when the system is stable, so monitor error rates as well.