itr_latency_low
nextlatency = itr_latency_low;
nextlatency = itr_latency_low;
case itr_latency_low: /* 20k ints/s */
nextlatency = itr_latency_low;
nextlatency = itr_latency_low;
nextlatency = itr_latency_low;
nextlatency = itr_latency_low;
case itr_latency_low: