How can you diagnose performance issues in NPM using the Orion Console and PerfStack?

• A. PerfStack is used to generate reports only
• B. Use PerfStack to compare any metrics available to identify bottlenecks
• C. Use PerfStack to combine metrics (latency, bandwidth, CPU on polling engine) to identify bottlenecks; check node health, poller load, and database; review historic trends
• D. Diagnostics rely solely on alerts

Answer: (C)

PerfStack in the Orion Console is a diagnostic workspace that lets you correlate multiple performance metrics over time to see how different components influence overall performance. By bringing together metrics such as latency, bandwidth, and CPU on the polling engine on the same timeline, you can spot where degradation begins and which element is driving it. It also prompts you to check node health, poller load, and database activity, and to compare current data with historic trends to determine if the issue is a persistent bottleneck or a single spike. This holistic, context-rich view goes beyond alerts and reports, making it the best way to diagnose where the performance issue originates.