Identifying Critical Scenarios and Metrics

Identifying critical scenarios is an inception and critical phase in load test process. Following are the various factors play a vital role in this phase: expertise in the application domain, business rules and requirements, technology etc.

Following the important metrics that needs to be collected and monitored:

1. Response time – how fast your application is?
2. Throughput – how many orders your application can process i.e. transactions per second?
3. CPU Utilization – What is the percentage utilization of your CPU?
4. Memory Utilization – What is the percentage utilization of your memory?
5. Network Utilization – What is the percentage utilization of your network bandwidth?
6. Disk Utilization – What is the percentage utilization of your disk?
7. User load – What is the maximum number of concurrent users your application can withstand?

Also there are different kinds of metrics which needs to be identified such as Client-side metrics, server-side metrics, business metrics, network metrics etc.