0. Checklist of load testing metrics

Checklist of load testing metrics to measure when evaluating your application's performance:

1. Web Server Metrics

• Busy and idle threads - Do you need more web servers or works?
• Throughput - How many transactions per second can you handle?
• Bandwidth Requirements - Is the network creating a bottleneck?

2. App Server Metrics

• Load distribution - Do you need more application servers?
• CPU usage - How much CPU usage do you need for each load?
• Memory usage - Are there any memory leaks?
• Worker threads - Are workers correctly configured?

3. Host Metrics

• CPU, memory, disk - Are there problems with network interfaces?
• Key processes - What processes are running on the host?

4. App Metrics

• Time spent in logic layer - What layer slows down with an increased load?
• Number of calls in logic layer - How often are you calling internal web services?

5. API Metrics

• ​Transactions per second - How much throughput can you handle?
• Bits per second - Is data a bottleneck?