Method Delta

pkg/stats/interface_counters.go:25–49

Delta calculates counters relative to the current baseline. On first sample, it sets baseline and returns zero. If counters roll back (interface reset/restart), it rebases and returns zero.

(currentRx, currentTx int64, reset bool)

// On first sample, it sets baseline and returns zero.
// If counters roll back (interface reset/restart), it rebases and returns zero.
func (t *InterfaceCountersTracker) Delta(currentRx, currentTx int64, reset bool) (int64, int64) {
	t.mu.Lock()
	defer t.mu.Unlock()

	if !t.baseSet {
		t.baseRx = currentRx
		t.baseTx = currentTx
		t.baseSet = true
	}

	if currentRx < t.baseRx || currentTx < t.baseTx {
		t.baseRx = currentRx
		t.baseTx = currentTx
	}

	deltaRx := currentRx - t.baseRx
	deltaTx := currentTx - t.baseTx

	if reset {
		t.baseRx = currentRx
		t.baseTx = currentTx
	}

	return deltaRx, deltaTx
}

func buildDeltaStats(name, link string, rx, tx int64) []*common.Stat {
	if rx == 0 && tx == 0 {