system_utilities.py 文件源码

def get_data(self):
        """Gets system utilization stats."""
        # Get system utilization stats.
        cpu_percent = psutil.cpu_percent(interval=1)
        memory_percent = psutil.virtual_memory().percent
        disk_percent = psutil.disk_usage('/').percent
        network_io = psutil.net_io_counters()
        # Compute deltas for sent and received bytes.  Note this is system-wide
        # network usage and not necessarily GPRS-related.
        # TODO(matt): query on a specific interface..which one, I'm not sure.
        if self.last_bytes_sent == 0:
            bytes_sent_delta = 0
        else:
            bytes_sent_delta = network_io.bytes_sent - self.last_bytes_sent
        self.last_bytes_sent = network_io.bytes_sent
        if self.last_bytes_received == 0:
            bytes_received_delta = 0
        else:
            bytes_received_delta = (
                network_io.bytes_recv - self.last_bytes_received)
        self.last_bytes_received = network_io.bytes_recv
        return {
            'cpu_percent': cpu_percent,
            'memory_percent': memory_percent,
            'disk_percent': disk_percent,
            'bytes_sent_delta': bytes_sent_delta,
            'bytes_received_delta': bytes_received_delta,
        }