Analyze Performance Profiles Analyze files (V8 sampling profiler) and DevTools trace files ( , Chrome Trace Event Format) to find performance bottlenecks, compare code paths, and understand timing. When to Use - User provides a or file and wants to understand performance - Investigating why one code path is slower than another - Finding what functions consume the most time - Comparing "before/after" or "old/new" implementations in a single profile - Investigating layout thrashing, long tasks, or rendering bottlenecks (trace files) - Analyzing VS Code user timing marks like (trace files) - Und…