JetBrains Rider 2022.1 Help

Performance profiling of .NET code

The goal of performance profiling is finding a cause of performance problems in an application. This includes, for example, a straightforward "what is the slowest method?" analysis, as well as more complicated analysis of performance bottlenecks related to CPU starvation, blocking garbage collection, disk I/O, and other issues.

JetBrains Rider integrates with the dotTrace profiler to provide performance profiling of .NET applications. You can use the profiler via the dotTrace Profiler tool window.

Limitations

Note that not all dotTrace features are yet available in JetBrains Rider. Thus, the integrated profiler provides only two views for analyzing snapshots: Call Tree and Top Methods. To get the entire feature set, you should open profiling snapshots in the standalone version of dotTrace (Windows only).

Installation and licensing

dotTrace is provided as a bundled plugin for Rider, and installed along with Rider automatically with no additional actions needed. If you want to disable dotTrace, you can do this via Rider's Plugins settings.

Note that dotTrace is available in Rider only for the owners of dotUltimate or All Products Pack subscriptions.

Supported CPU architectures

CPU

Details

x86, x64

  • Windows, Linux, macOS: See details.

  • Linux (musl-based): .NET Core 3.1 and .NET 5.0–6.0 on x64 only. Only Alpine 3.13-3.15 is supported.

arm64

  • Linux (glibc-based): GLIBC_2.23 or later.

  • Linux (musl-based): .NET 5.0–6.0. Only Alpine 3.13-3.15 is supported.

Supported operating systems and frameworks

Windows

macOS | Linux

Native

Supported

Available in: JetBrains Rider, Visual Studio, standalone, console tool

Supported profiling types: Timeline.

Not available

.NET Framework 1.0 – 4.8

Supported

Available in: JetBrains Rider, Visual Studio, standalone, console tool

Supported profiling types: Timeline, Sampling, Tracing, Line-by-Line.

Notes:

  • You can attach only to .NET Framework 4.0 or later processes.

Not available

.NET Core 1.0 – 3.1

.NET 5 – 6

Supported

Available in: JetBrains Rider, Visual Studio, standalone, console tool

Supported profiling types: Timeline, Sampling, Tracing, Line-by-Line.

Notes:

  • You can attach only to .NET Core 3.0 or later processes.

Supported

Available in: JetBrains Rider, console tool

Supported profiling types: Timeline, Sampling, Tracing.

Notes:

  • Because of some limitations of .NET Core, there may be some issues with profiling projects that target .NET Core 3.0 or earlier. In some cases, the profiled application may hang or crash. Projects targeting .NET Core 3.1 can be profiled without any issues.

  • Attaching to running .NET Core processes is possible:

    • On Linux: only for .NET Core 3.0 or later.

    • On macOS: only for .NET 5 or later.

Mono 5.10 and later

Supported

Available in: JetBrains Rider, Visual Studio, standalone, console tool

Supported profiling types: Timeline.

Supported

Available in: JetBrains Rider, console tool

Supported profiling types: Timeline.

Notes:

  • Only 64-bit processes can be profiled.

  • Attaching to running Mono processes is not possible.

Mono Unity 2018.3 and later

Supported

Available in: JetBrains Rider, Visual Studio, standalone, console tool

Supported profiling types: Timeline.

Supported

Available in: JetBrains Rider, console tool

Supported profiling types: Timeline.

Notes:

  • Attaching to running Unity processes is not possible.

What can you profile with Rider

Last modified: 22 December 2021