tcollector sensor instantaneous rate of bytes leaving squid.

gistfile1.txt

#!/usr/bin/env python
import time

while True:
    rx = open('/sys/class/net/eth0/statistics/rx_bytes')
    tx = open('/sys/class/net/eth0/statistics/tx_bytes')
    rx1 = int(rx.read())
    tx1 = int(tx.read())
    rx.close()
    tx.close()

    time.sleep(1)

    rx = open('/sys/class/net/eth0/statistics/rx_bytes')
    tx = open('/sys/class/net/eth0/statistics/tx_bytes')
    rx2 = int(rx.read())
    tx2 = int(tx.read())
    rx.close()
    tx.close()

    rx_rate = (rx2 - rx1) / 1024
    tx_rate = (tx2 - tx1) / 1024

    print "%s %s %s" % ('bytes.rate.in', int(time.time()), rx_rate)
    print "%s %s %s" % ('bytes.rate.out', int(time.time()), tx_rate)