build-parallelism

Optimize MSBuild parallelism and multi-project scheduling for .NET builds.

5.1k|377|Updated Feb 3, 2026

Search Tags:#performance #build optimization #dependency graph #parallelism #msbuild #dotnet build

Ready to run

npx skills add https://github.com/dotnet/skills --skill build-parallelism

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Please help me install this Agent Skill.
Skill: build-parallelism
Source: https://github.com/dotnet/skills/tree/main/plugins/dotnet-msbuild/skills/build-parallelism
Command: npx skills add https://github.com/dotnet/skills --skill build-parallelism

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses slow build times in .NET projects by optimizing how MSBuild utilizes multiple CPU cores and manages project dependencies.

Core Features & Use Cases

Parallel Build Optimization: Configure MSBuild to use more CPU cores (/maxcpucount).
Dependency Graph Analysis: Understand and improve the order in which projects are built to minimize bottlenecks.
Graph Build Mode: Leverage /graph for enhanced scheduling in complex solutions.
Reference Optimization: Reduce unnecessary project references to streamline the build process.
Use Case: When your large .NET solution takes hours to build, this skill helps you diagnose why and implement strategies to cut build times significantly.

Quick Start

Use the build-parallelism skill to analyze why my build is not using all available CPU cores.

Frequently Asked Questions about build-parallelism

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I speed up MSBuild parallel compilation for large .NET solutions?▼

MSBuild parallel compilation is optimized by configuring the /maxcpucount parameter to utilize more CPU cores and evaluating the /graph build mode to improve multi-project scheduling. This reduces overall build times by maximizing core utilization and streamlining project dependencies.

Why does my dotnet build underutilize CPU cores during multi-project compilation?▼

Your dotnet build underutilizes CPU cores when project dependency graphs create scheduling bottlenecks. Analyzing the dependency graph and enabling BuildInParallel alongside the /maxcpucount parameter allows MSBuild to schedule projects concurrently and fully utilize available processors.

What is the MSBuild graph build mode and when should I use it?▼

MSBuild graph build mode uses the /graph parameter to construct a project dependency graph for enhanced scheduling in complex .NET solutions. Use it when standard parallel builds encounter bottlenecks from unnecessary project references and require optimized multi-project compilation order.

How can I reduce unnecessary project references to streamline the MSBuild process?▼

Reduce unnecessary project references by analyzing the dependency graph to identify and remove redundant links. Streamlining these references minimizes build bottlenecks, allowing MSBuild to execute BuildInParallel more efficiently and significantly cut down multi-project build times.

Does enabling /maxcpucount work without analyzing the project dependency graph?▼

Enabling /maxcpucount works to increase CPU core allocation, but without analyzing the project dependency graph, multi-project compilation may still face scheduling bottlenecks. Combining /maxcpucount with graph build mode and reference optimization yields the fastest build speed.