/
iperftest.py
executable file
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/
iperftest.py
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#!/usr/bin/env python
import sys
from optparse import OptionParser
from subprocess import Popen, PIPE
from dataformatter import DataFormatter
class IPerfTest(object):
"""
A single iperf test. Keeps track of up and down statistics for later use.
Each test instance must have an identifier, if not defined a value will be
assigned (defaults to -1).
"""
IPERF_PORT = 5001
PRINT_WIDTH = 80
#Data tuple locations
TIMESTAMP = 0
CLIENT_IP = 1
CLIENT_PORT = 2
SERVER_IP = 3
SERVER_PORT = 4
TEST_ID = 5
TIME_RANGE = 6
TRANSFERED = 7
SPEED = 8
def __init__(self, server, id=-1, description='', time=15, window='64k',
interval=1, csvfile=None, summaryfile=None, cli=False):
self.server = server
self.id = id
self.description = description
self.time = time
self.window = window
self.interval = interval
self.csvfile = csvfile
self.summaryfile = summaryfile
self.cli = cli
self.subprocess = None
self.iperf_cmd = 'iperf -c %s -t %d -w %s -r -i %s -y C' % \
(server, time, window, interval)
self.iperf_up_data = []
self.up_speed_min = -1
self.up_speed_max = -1
self.iperf_down_data = []
self.down_speed_min = -1
self.down_speed_max = -1
def process_up_csv(self, data):
current_speed = int(data[IPerfTest.SPEED])
if current_speed < self.up_speed_min or self.up_speed_min == -1:
self.up_speed_min = current_speed
if current_speed > self.up_speed_max or self.up_speed_max == -1:
self.up_speed_max = current_speed
self.iperf_up_data.append(data)
def process_down_csv(self, data):
current_speed = int(data[IPerfTest.SPEED])
if current_speed < self.down_speed_min or self.down_speed_min == -1:
self.down_speed_min = current_speed
if current_speed > self.down_speed_max or self.down_speed_max == -1:
self.down_speed_max = current_speed
self.iperf_down_data.append(data)
def process_csv(self, csv_line, updown):
data = csv_line.split(',')
if self.cli:
print ' %s sec \t%s\t%s/sec' % \
(data[self.TIME_RANGE],
DataFormatter.format_bytes(data[IPerfTest.TRANSFERED]),
DataFormatter.format_bits(data[IPerfTest.SPEED])
)
if updown == 'up':
self.process_up_csv(data)
else:
self.process_down_csv(data)
def get_up_transferred(self):
return float(self.iperf_up_data[-1][IPerfTest.TRANSFERED])
def get_up_speed(self):
return float(self.iperf_up_data[-1][IPerfTest.SPEED])
def get_up_speed_min(self):
return float(self.up_speed_min)
def get_up_speed_max(self):
return float(self.up_speed_max)
def get_down_transferred(self):
return float(self.iperf_down_data[-1][IPerfTest.TRANSFERED])
def get_down_speed(self):
return float(self.iperf_down_data[-1][IPerfTest.SPEED])
def get_down_speed_min(self):
return float(self.down_speed_min)
def get_down_speed_max(self):
return float(self.down_speed_max)
def get_up_jitter(self):
diff = float(self.up_speed_max - self.up_speed_min)
return (diff / self.get_up_speed() * 100)
def get_down_jitter(self):
diff = float(self.down_speed_max - self.down_speed_min)
return (diff / self.get_down_speed() * 100)
def test_server_alive(self):
#TODO: Don't exit. Throw an exception instead.
try:
import socket
sock = socket.socket()
sock.settimeout(2)
sock.connect((self.server, IPerfTest.IPERF_PORT))
sock.close()
except socket.error as sockerror:
error = 'Could not connect to iperf server at %s:%s ' % \
(self.server, IPerfTest.IPERF_PORT) + '(' + str(sockerror[1]) + ')'
raise Exception(error)
def get_header(self):
header = '-' * IPerfTest.PRINT_WIDTH + '\n'
header += '|%s|\n' % self.description.center(IPerfTest.PRINT_WIDTH - 2)
header += '|%s|\n' % ''.join(('Test #', str(self.id))).center(IPerfTest.PRINT_WIDTH - 2)
header += '-' * IPerfTest.PRINT_WIDTH + '\n'
return header
def print_header(self):
print self.get_header(),
def get_summary(self):
try:
summary = 'Upload:\n'
summary += ' %s: %s\t%s: %s\n' % \
('Transferred'.ljust(11), DataFormatter.format_bytes(self.get_up_transferred()),
'Speed'.ljust(11), DataFormatter.format_bits(self.get_up_speed()))
summary += ' %s: %s\t%s: %s\n' % \
('Min'.ljust(11), DataFormatter.format_bits(self.get_up_speed_min()),
'Max'.ljust(11), DataFormatter.format_bits(self.get_up_speed_max()))
summary += ' %s: %2.2f%%\n' % ('Jitter'.ljust(11), self.get_up_jitter())
summary += 'Download:\n'
summary += ' %s: %s\t%s: %s\n' % \
('Transferred'.ljust(11), DataFormatter.format_bytes(self.get_down_transferred()),
'Speed'.ljust(11), DataFormatter.format_bits(self.get_down_speed()))
summary += ' %s: %s\t%s: %s\n' % \
('Min'.ljust(11), DataFormatter.format_bits(self.get_down_speed_min()),
'Max'.ljust(11), DataFormatter.format_bits(self.get_down_speed_max()))
summary += ' %s: %2.2f%%\n' % ('Jitter'.ljust(11), self.get_down_jitter())
return summary
except:
pass
def print_summary(self):
print self.get_summary(),
def run(self):
self.test_server_alive()
if self.csvfile:
self.csvfile.writelines(self.get_header())
self.subprocess = Popen(self.iperf_cmd, stdout=PIPE, stderr=PIPE, shell=True)
line_count = 0
if self.cli:
print 'Upload In Progress:'
while True:
line = self.subprocess.stdout.readline().replace('\n', '')
if line == '' and not self.subprocess.poll() == None:
break
updown = 'up' if (line_count < (self.time + 1)) else 'down'
if self.cli and line_count == (self.time + 1):
print 'Download In Progress:'
line_count += 1
if not len(line) == 0:
if self.csvfile:
print >>self.csvfile, line
self.process_csv(line, updown)
if self.summaryfile:
self.summaryfile.write(self.get_header())
self.summaryfile.write(self.get_summary())
def kill_subprocess(self):
if self.subprocess == None:
return
try:
self.subprocess.terminate()
except:
try:
self.subprocess.kill()
except:
raise Exception('Popen terminate and kill failed.')
if __name__ == "__main__":
parser = OptionParser()
parser.add_option('-c', '--client', dest='server',
help='iperf server to connect to', metavar='server_ip')
parser.add_option('-t', '--time', dest='time', type='int', default=15,
help='time (in seconds) to run', metavar='test_time')
parser.add_option('-i', '--interval', dest='interval', type='int', default=1,
help='interval to print data', metavar='update_interval')
parser.add_option('-w', '--window', dest='window', type='string', default='64k',
help='iperf window size', metavar='tcp_window')
parser.add_option('-d', '--description', dest='description', type='string',
help='test comment (location, antenna name, distance, etc.)',
metavar='description')
parser.add_option('', '--csv-file', dest='csvfile', type='string',
default=None, help='csv filename', metavar='csvfile.csv')
parser.add_option('', '--summary-file', dest='summaryfile', type='string',
default=None, help='summary filename', metavar='summaryfile.txt')
(options, args) = parser.parse_args()
required_options = ('--client', '--description')
error_message = None
for opt in required_options:
opt_object = parser.get_option(opt)
if eval('options.' + opt_object.dest) == None:
if error_message == None:
error_message = 'Error: %s is a required option.\n' % \
"/".join(opt_object._short_opts)
else:
error_message = '%s Error: %s is a required option.\n' % \
(error_message, "/".join(opt_object._short_opts))
if not error_message == None:
error_message = '\n %s \n %s' % (error_message, parser.format_help())
parser.exit(status=2, msg=error_message)
test = None
try:
csvfile = summaryfile = None
csvfile_option = parser.get_option('--csv-file')
summaryfile_option = parser.get_option('--summary-file')
if not eval('options.' + csvfile_option.dest) == None:
csvfile = open(options.csvfile, 'a+', 0)
if not eval('options.' + summaryfile_option.dest) == None:
summaryfile = open(options.summaryfile, 'a+', 0)
test = IPerfTest(options.server, description=options.description,
time=options.time, window=options.window,
interval=options.interval, csvfile=csvfile,
summaryfile=summaryfile, cli=True)
test.print_header()
test.run()
test.print_summary()
except KeyboardInterrupt:
print
try:
test.kill_subprocess()
except:
print 'Could not kill the iperf subprocess, you should do so manually.'
sys.exit(0)