See what renders slowly, and why.
performance profiling
Profile a React Native Hermes app to measure re-render and CPU performance using argent profiler tools.
When to use it
Use it when optimizing performance, measuring before and after a fix, spotting slow components, diagnosing re-renders, checking CPU hotspots, or producing a ranked issue report.
Give it a React Native project, profiling scenario, success metric, and interaction sequence; it returns an analysis report with performance findings.
What you provide
This skill
react-profiler-start and native-profiler-start
Starts profiling sessions
/tmp/argent-profiler-cwd/
Saves profiling data
React Native app on the simulator
Reads live render data
Profiling must run on a simulator; physical iPhones are unsupported.