code: func (pool *serverPool) adjustResponseTime(entry *poolEntry, time time.Duration, timeout bool) {
  	if entry == nil {
  		return
  	}
  	if timeout {
  		pool.adjustStats <- poolStatAdjust{pseResponseTimeout, entry, time}
  	} else {
  		pool.adjustStats <- poolStatAdjust{pseResponseTime, entry, time}
  	}
  }
docs: // adjustResponseTime adjusts the request response time statistics of a node