PerformanceMonitor
Free, open-source SQL Server performance monitoring. Full Edition (server-installed, 30 collectors) and Lite Edition (standalone, DuckDB). Built-in MCP server for AI integration.
217stars
22forks
C#
Added 3/5/2026
MCP Serversaws-rdsazure-sqlblockingdatabase-monitoringdba-tools
Installation
# Add to your Claude Code skills
git clone https://github.com/erikdarlingdata/PerformanceMonitorSQL Server Performance Monitor
Free, open-source monitoring that replaces the tools charging you thousands per server per year. 30+ collectors, real-time alerts, built-in MCP server for AI analysis. Nothing phones home. Your data stays on your server and your machine.
Supported: SQL Server 2016–2025 | Azure SQL Managed Instance | AWS RDS for SQL Server | Azure SQL Database (Lite only)
Download
👉 Not sure which edition to pick? Start with Lite. One download, nothing installed on your server, data flowing in under 5 minutes.
| | Full Edition | Lite Edition |
|---|---|---|
| What it does | Installs a PerformanceMonitor database with 30 T-SQL collectors running via SQL Agent. Separate dashboard app connects to view everything. | Single desktop app that monitors remotely. Stores data locally in DuckDB + Parquet. Nothing touches your server. |
| Best for | Production 24/7 monitoring, long-term baselining | Quick triage, Azure SQL DB, locked-down servers, consultants, firefighting |
| Requires | sysadmin + SQL Agent running | VIEW SERVER STATE (that's it) |
| Get started | Run the installer, open the dashboard | Download, run, add a server, done |
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