Performance and Debugging with the

Diagnostics Hub in Visual Studio 2013

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Sasha Goldshtein

CTO, Sela GroupMicrosoft C# MVP, Azure MRS@goldshtn blog.sashag.net

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

Visual Studio Diagnostic Tools

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

Unified Diagnostics Hub

• Pick a target and then choose the tools that work best

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

Sampling Profiler• Get quick CPU

performance information

• Measures CPU time, not wall-clock!

• Supports attach/detach

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

Instrumentation Profiler• More accurate time

information (wall-clock)

• Much more expensive because of instrumentation

• No attach/detach

void DoSomething(){ ENTER_METHOD(123); for (...) ... EXTERNAL_CALL(123, 456); HelperMethod(); EXTERNAL_RET(123, 456); for (...) ... EXIT_METHOD(123);}

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

DEMOSampling vs. Instrumentation

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

Concurrency Visualizer• Visualize the behavior

of your threads and your CPU utilization

• Identify blocking behaviors

• Identify concurrency anti-patterns

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

UI Responsiveness Tool• For Windows Store

XAML/JavaScript apps

• Understands why your UI isn’t crisp and responsive

• Combine with CPU usage and energy utilization tools

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

DEMOConcurrency and UI Responsiveness

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

Memory Usage Analysis• Run a Windows

Store/Phone app and inspect its memory allocations– Large, inefficient

allocations can slow down C# and JS apps

– In C++ apps, this is the only way to debug memory leaks

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

Memory Dump Analysis• Open .NET dump

files* and inspect live objects, reference chains, etc.

* Also PerfView/Azure heap snapshots

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

DEMOMemory Analysis

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PERFORMANCE AND DEBUGGING WITH THE DIAGNOSTICS HUB IN VISUAL STUDIO

Summary

• There’s something for everyone in the Visual Studio diagnostic hub

• Performance, memory, dump analysis, UI responsiveness, and much more

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