lseb/utils/check_counters.py at master · giacomini/lseb

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#!/usr/bin/python

import sys

import subprocess

import time

from datetime import datetime

interval = 5.0 # time interval in seconds

while True:

# reset counters

p = subprocess.Popen(["/usr/sbin/perfquery", "-x", "-R"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

out, err = p.communicate()

if err:

sys.exit(err)

# sleep

start = datetime.now()

time.sleep(interval)

end = datetime.now()

delta = end - start

delta_seconds = delta.seconds + delta.microseconds/1000000.

# read counters

p = subprocess.Popen(["/usr/sbin/perfquery", "-x", "-r"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

out, err = p.communicate()

if err:

sys.exit(err)

# split output

output_list = out.split("\n")

# Get Xmit and Rcv

xmit = long(output_list[3].split("PortXmitData:....................", 1)[1])

rcv = long(output_list[4].split("PortRcvData:.....................", 1)[1])

xmit = xmit / delta_seconds # in time interval

rcv = rcv / delta_seconds # in time interval

xmit = xmit * 4.0 # 4 lanes

rcv = rcv * 4.0 # 4 lanes

xmit = xmit * 8.0 # from byte to bit

rcv = rcv * 8.0 # from byte to bit

xmit = xmit / 1000000000.0 # to giga

rcv = rcv / 1000000000.0 # to giga

print "Xmit: {} Gb/s".format(xmit)

print "Rcv: {} Gb/s".format(rcv)

print "Tot: {} Gb/s".format(xmit + rcv)

sys.stdout.flush()