Windows Performance Monitor and Resource Monitor supply metrics that help explain SQL Server slowdowns, but each metric must be interpreted alongside actual database activity.
Concepts and context
Capture CPU consumption, memory pressure and disk latency during healthy and slow periods. Within SQL Server, examine actual query plans, Query Store, wait statistics, blocking and selected dynamic management views.
Practical application
When a report becomes slow, record execution duration and logical reads, reproduce it safely, compare Windows counters to database timings and change one verified bottleneck at a time.
Compatibility and cautions
SQL Server routinely uses memory for caching, so high memory usage alone is not evidence of a fault. Historic tutorials may suggest Profiler or SQL Trace; modern practices often favor Extended Events and Query Store.
AI and reuse disclosure: This newly written tutorial was generated with AI using an existing Open Education article (post 7933) as its starting point; explanations and examples may have been added. You may copy, edit and reuse the generated text with or without a reference. Rights in trademarks and third-party content remain with their respective owners. AI can make mistakes. Verify version compatibility, code and operational advice against current official documentation.
