Purpose
Soft-profiling event. Every operation traced by the PerfTracer emits one wr_perf_trace action carrying the measured deltas. Subscribe to ship traces to a log, dashboard or telemetry pipeline — the renderer does not need to know about the consumers.
Usage
add_action( 'wr_perf_trace', array( $this, 'on_perf_trace' ) );Parameters
$trace (PerfTrace): Value object with:operation (string): Name of the traced operation.wallMs (float): Wall-clock duration in milliseconds.peakDeltaMb (int): Peak-memory delta in MB.currentDeltaMb (int): Current-memory delta in MB.queryDelta (int): Number of database queries issued during the operation.
Traces are additionally buffered in-process (bounded ring buffer) for the self-check surface.