Performance Analyzer in Power BI

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The Performance Analyzer in Power BI is a built-in tool that helps users diagnose and optimize the performance of reports by analyzing how visuals, queries, and DAX calculations are executed.

Key Uses of Performance Analyzer

✅ Identify Slow Visuals – Helps detect which visuals take the longest to load and why.

✅ Analyze Query Performance – Tracks the time taken by each visual to retrieve data from the data model.

✅ Optimize DAX Measures – Pinpoints inefficient DAX calculations that slow down report performance.

✅ Monitor Report Interactions – Shows how slicers, filters, and visuals impact performance when users interact with the report.

✅ Improve Data Model Efficiency – Helps refine relationships, indexing, and aggregations for faster performance.

How to Use Performance Analyzer in Power BI Desktop

1️⃣ Go to View → Click on Performance Analyzer

2️⃣ Click Start Recording

3️⃣ Interact with visuals to capture their performance

4️⃣ Review the time taken by different processes

5️⃣ Optimize slow queries, visuals, or DAX measures

Best Practices for Optimization

✔ Use optimized DAX functions (e.g., SUMX, FILTER, CALCULATE wisely)

✔ Reduce the number of visuals on a page

✔ Prefer aggregated data over large raw datasets

✔ Optimize model relationships and indexing

✔ Use Import Mode instead of DirectQuery where possible

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