Intel® VTune™ Profiler User Guide

User Guide

Contents

.NET* Targets

Explore performance analysis specifics for pure .NET* applications or native applications with .NET calls.
Intel® VTune™
Profiler
 automatically identifies the type of the code based on the debugger type specified in the Visual Studio project property pages:
VTune
Profiler
 inherits this setting to set the profiling mode for the analysis target. The following types are possible:
  • Native
     mode collects data on native code only, does not attribute data to managed source.
  • Managed
     mode collects everything, resolves samples attributed to native code, attributes data to managed source only. The call stack in the analysis result displays data for managed code only.
  • Mixed
     collects everything and attributes data to managed source where appropriate. Consider using this option when analyzing a native executable that makes calls to the managed code.
  • Auto
     mode automatically detects the type of target executable, managed or native, and switches to the corresponding mode.

Profiling Pure .NET Applications

If you analyze a pure .NET application, the
VTune
Profiler
 resolves the
Auto
 mode to
Mixed
.
Before profiling a pure .NET application, make sure to generate debug information for a native image of .NET managed assembly, which is required for successful module resolution and source analysis:
  1. Use the Native Image Generator tool (
    Ngen.exe
    ) from the .NET Framework to generate a native
    .pdb
     file.
  2. Click the
    Configure Analysis
     button on the toolbar.
  3. In the
    Configure Analysis
     window, click the
    Search Binaries
     button at the bottom.
  4. In the
    Binary/Symbol Search
     dialog box, add a path to the generated native
    .pdb
     file.

Profiling Native Applications with .NET Calls

If you analyze a native application that calls managed code, the
VTune
Profiler
 resolves the
Auto
 mode to
Native
 and does not profile managed code. In this case, if you want to enable the
VTune
Profiler
 to profile the managed code called from the native application, set the profiling mode to
Mixed
 as follows:
  1. Click the
    Configure Analysis
     button on the toolbar.
    The
    Configure Analysis
     window opens.
  2. De-select the
    Inherit settings from Visual Studio* project
     check box.
    The
    Managed code profiling mode
     option is enabled.
  3. In the
    WHAT
     pane, from the
    Advanced > Managed code profiling mode
     menu, select the required profiling mode.
  • System-wide profiling is not supported for managed code.
  • Starting with the VTune Amplifier 2018 Update 2, you can use the Hotspots analysis in the
    hardware event-based sampling
     mode (former Advanced Hotspots) to profile .Net Core applications running on Linux* or Windows* systems in the
    Launch Application
     mode. For the product versions prior to 2018 Update 2, make sure to manually configure CoreCRL environment variables to enable the Advanced Hotspots analysis.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.