Profiler Commit Time Does Not Equal Sum of Component Render Durations

The profiler rounds each component's duration down, so the visible sum always understates the true total

Commit time is wall-clock time for the entire commit phase, covering reconciliation, ref attachment/cleanup, and layout effects in addition to userland render functions

React double-counts the top-level component's render time in the total but not in the per-component breakdown

The gap indicates a memory leak in one of the unlisted child components