How to view and analyze JMeter Result - J3

🧩 Pre-condition:

• JMeter is openning
• Test Plan is created with HTTP Request
• Thread Group is active and request works

🛠 Steps by step:

Step 1: Thread Group → Add → Listener

Step 2: Choose one or more Listeners

• View Results Tree
• Summary Report
• Aggregate Report
• Graph Results

Step 4: Click the Start button to run the test

Step 5: After the test completes, view the results in each Listener

✅ Expected Result:

📌 For a well-performing system, you should aim for:

• Zero errors.
• Average response time below 800ms (for APIs).
• 90% Line close to the average.
• Stable throughput.
• Low standard deviation. => These indicators help you understand not just whether your test passed, but also whether your system is fast, stable, and ready for production traffic.

Each Listener shows a different view
🔍 1. View Results Tree: Great for debugging and API testing

• Status codes are correct (e.g., 200, 201, 204)
• Response data should not be null/error
• Error/Failure if timeout, connection refused, 401, 403
• Response time should ideally be under 1000ms for a normal web/API service

🔍 2. Summary Report: Quick performance overview

• A correct number of samples (matches the number of users × loops)
• An average response time under 800–1000ms
• A 0% error rate (meaning no requests failed)
• A reasonable max response time, not too far from the average
• High throughput, meaning the system can handle many requests per second => If the error rate is above 0%, you should look into the cause in the View Results Tree.

🔍 3. Aggregate Report: Detect performance spikes or instability

• 90% Line: 90% of your requests finished faster than this time. It should not be far from the average. A big gap might mean performance is inconsistent
• Standard Deviation: This tells you how stable your response times are The lower, the better. High deviation means the system reacts differently under the same load — a sign of instability
• Max response time: Should not go beyond 3–5 seconds for simple requests => If you see high deviation and a max response time far from the average, even when the error rate is 0%, it still indicates potential performance issues.

🔍 4. Graph Results (optional): Easy visual tracking of performance over time