Olstakh.CodeAnalysisMonitor 1.0.17

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet tool install --global Olstakh.CodeAnalysisMonitor --version 1.0.17
This package contains a .NET tool you can call from the shell/command line. 
dotnet new tool-manifest
                    


                            if you are setting up this repo
                        

                    

                
dotnet tool install --local Olstakh.CodeAnalysisMonitor --version 1.0.17
This package contains a .NET tool you can call from the shell/command line. 
#tool dotnet:?package=Olstakh.CodeAnalysisMonitor&version=1.0.17
                    


                    

                
nuke :add-package Olstakh.CodeAnalysisMonitor --version 1.0.17

Code Analysis Monitor

A .NET tool that monitors Roslyn code analysis events in real-time via ETW. Shows live top-like tables for source generator performance and VBCSCompiler server compilation durations.

Install

dotnet tool install --global Olstakh.CodeAnalysisMonitor

Usage

Requires an elevated (Administrator) terminal — ETW real-time sessions need admin privileges.

Generator Command (default)

ca-monitor
ca-monitor generator

Shows a live table of source generator performance as Visual Studio (or any Roslyn compiler) runs generators. An Exceptions column appears automatically when any generator throws an exception.

Columns
  1. Generator — fully qualified generator type name
  2. Invocations — total invocation count
  3. Avg Duration — average duration per invocation
  4. P90 Duration — 90th percentile duration
  5. Total Duration — cumulative time spent (default sort)
  6. Exceptions — exception count (shown only when > 0 for any generator, highlighted in red)

Compilation Command

ca-monitor compilation

Shows a live table of VBCSCompiler server compilation durations. Events fire during actual builds (not IntelliSense/design-time).

Columns
  1. Project — project name
  2. Compilations — total compilation count
  3. Avg Duration — average compilation duration
  4. P90 Duration — 90th percentile duration
  5. Total Duration — cumulative time spent (default sort)

Options

Option Default Description
--top N 50 Maximum number of rows to display
--save-on-exit false Export collected data to CSV files on exit

When --save-on-exit is specified, two CSV files are written to the current directory on exit:

  • Summary (generator-summary-<timestamp>.csv or compilation-summary-<timestamp>.csv) — one row per generator/project with aggregated stats.
  • Detail (generator-detail-<timestamp>.csv or compilation-detail-<timestamp>.csv) — one row per individual event, ordered by timestamp.

Keyboard Controls

Key Action
1–5 (or 1–6 if there was exception in a generator) Sort by column (descending). Press again to toggle ascending.
Ctrl+C Exit

Notes

  • Generator data updates when Visual Studio / other IDE triggers design-time builds (on code edits, file saves, solution load) — gaps between updates are normal.
  • Compilation events fire only during actual builds (dotnet build, Build in VS), not during IntelliSense.
  • The generator table refreshes every 100ms; the compilation table refreshes every 1s.
Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

This package has no dependencies.

Version Downloads Last Updated
1.0.17 181 2/23/2026
1.0.15 127 2/23/2026
1.0.14 123 2/22/2026
1.0.13 128 2/22/2026