MSDN Documentation

Tools & Performance

Performance Analyzer

Unlock the full potential of your applications by identifying and resolving performance bottlenecks with the advanced Performance Analyzer tool.

Introduction

The Performance Analyzer is a powerful diagnostic tool designed to help developers understand the runtime behavior of their applications. It provides detailed insights into CPU usage, memory allocation, thread activity, I/O operations, and much more, enabling precise identification of performance-critical areas.

Key Features

Getting Started

To begin analyzing your application's performance:

  1. Launch the Performance Analyzer from your development environment or as a standalone application.
  2. Select the target process or application you wish to profile.
  3. Start a profiling session, choosing the metrics you want to collect.
  4. Monitor the live data or stop the session to perform in-depth analysis.

Common Use Cases

1. Identifying CPU Hotspots

Use the CPU Sampling or Instrumentation profiling modes to pinpoint functions or code paths consuming the most processing time. The call stack view helps trace execution flow and understand the context.

// Example of a potential performance bottleneck
            function expensiveCalculation(data) {
                // ... complex computations ...
                return result;
            }

            for (let i = 0; i < largeArray.length; i++) {
                expensiveCalculation(largeArray[i]); // Potential hotspot
            }

2. Diagnosing Memory Leaks

The Memory Usage profiler tracks object allocations and deallocations. By analyzing snapshots over time, you can identify objects that are not being released, indicating a memory leak.

Look for increasing object counts of specific types without corresponding decreases.

3. Analyzing Threading Issues

Understand thread contention, deadlocks, and synchronization delays. The Thread Activity view visualizes thread states and transitions, helping to resolve concurrency problems.

Advanced Techniques

Explore advanced features like event tracing for Windows (ETW) integration, custom event markers, and performance counters for deeper system-level insights.

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