Method handleRuntime

proxy/internal/debug/handler.go:742–780

handleRuntime returns cheap runtime and process stats. Safe to hit on a running proxy; does not read pprof profiles.

(w http.ResponseWriter, _ *http.Request)

// handleRuntime returns cheap runtime and process stats. Safe to hit on a
// running proxy; does not read pprof profiles.
func (h *Handler) handleRuntime(w http.ResponseWriter, _ *http.Request) {
	var m runtime.MemStats
	runtime.ReadMemStats(&m)

	clients := h.provider.ListClientsForDebug()
	started := 0
	for _, c := range clients {
		if c.HasClient {
			started++
		}
	}

	resp := map[string]any{
		"uptime":         time.Since(h.startTime).Round(time.Second).String(),
		"goroutines":     runtime.NumGoroutine(),
		"num_cpu":        runtime.NumCPU(),
		"gomaxprocs":     runtime.GOMAXPROCS(0),
		"go_version":     runtime.Version(),
		"heap_alloc":     m.HeapAlloc,
		"heap_inuse":     m.HeapInuse,
		"heap_idle":      m.HeapIdle,
		"heap_released":  m.HeapReleased,
		"heap_sys":       m.HeapSys,
		"sys":            m.Sys,
		"live_objects":   m.Mallocs - m.Frees,
		"num_gc":         m.NumGC,
		"pause_total_ns": m.PauseTotalNs,
		"clients":        len(clients),
		"started":        started,
	}

	if proc := readProcStatus(); proc != nil {
		resp["vm_rss"] = proc["VmRSS"]
		resp["vm_size"] = proc["VmSize"]
		resp["vm_data"] = proc["VmData"]
	}

	h.writeJSON(w, resp)
}

// readProcStatus parses /proc/self/status on Linux and returns size fields
// in bytes. Returns nil on non-Linux or read failure.