Coding agents drive high CPU and disk usage on macOS

Running multiple coding agents concurrently on a Mac can cause high system resource usage due to background file writes, development servers, and macOS file event systems. The author outlines a diagnostic workflow using Activity Monitor and command-line tools like fs_usage and mdutil to identify busy processes and manage Spotlight indexing or APFS volumes. Rather than disabling system-wide file monitoring, the author recommends reducing unnecessary file writes and watcher scopes at the source. Open article →