Method ComputeNetworkUsage

be/src/util/system-state-info.cc:207–217

}

void SystemStateInfo::ComputeNetworkUsage(int64_t period_ms) {
  if (period_ms <= 0) return;
  // Compute network throughput in bytes per second
  const NetworkValues& cur = network_values_[net_val_idx_];
  const NetworkValues& old = network_values_[1 - net_val_idx_];
  int64_t rx_bytes = cur[NET_RX_BYTES] - old[NET_RX_BYTES];
  network_usage_.rx_rate.Store(rx_bytes * 1000L / period_ms);

  int64_t tx_bytes = cur[NET_TX_BYTES] - old[NET_TX_BYTES];
  network_usage_.tx_rate.Store(tx_bytes * 1000L / period_ms);
}

void SystemStateInfo::ReadCurrentProcDiskStats() {
  string path = "/proc/diskstats";