108 lines
3.4 KiB
Python
Executable file
108 lines
3.4 KiB
Python
Executable file
#!/usr/bin/python
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# Copyright (c)2010-2012 the Boeing Company.
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# See the LICENSE file included in this distribution.
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# run iperf to measure the effective throughput between two nodes when
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# n nodes are connected to a virtual hub/switch; run test for testsec
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# and repeat for minnodes <= n <= maxnodes with a step size of
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# nodestep
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import datetime
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import optparse
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import sys
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from core.misc import ipaddress, nodeutils, nodemaps
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from core.misc.utils import mutecall
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from core.netns import nodes
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from core.session import Session
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try:
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mutecall(["iperf", "-v"])
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except OSError:
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sys.stderr.write("ERROR: running iperf failed\n")
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sys.exit(1)
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def test(numnodes, testsec):
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# node list
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n = []
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# IP subnet
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prefix = ipaddress.Ipv4Prefix("10.83.0.0/16")
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session = Session(1)
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# emulated network
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net = session.add_object(cls=nodes.SwitchNode)
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for i in xrange(1, numnodes + 1):
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tmp = session.add_object(cls=nodes.LxcNode, name="n%d" % i)
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tmp.newnetif(net, ["%s/%s" % (prefix.addr(i), prefix.prefixlen)])
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n.append(tmp)
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n[0].cmd(["iperf", "-s", "-D"])
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n[-1].icmd(["iperf", "-t", str(int(testsec)), "-c", str(prefix.addr(1))])
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n[0].cmd(["killall", "-9", "iperf"])
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raw_input("press enter to exit")
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session.shutdown()
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def main():
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usagestr = "usage: %prog [-h] [options] [args]"
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parser = optparse.OptionParser(usage=usagestr)
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parser.set_defaults(minnodes=2)
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parser.add_option("-m", "--minnodes", dest="minnodes", type=int,
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help="min number of nodes to test; default = %s" %
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parser.defaults["minnodes"])
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parser.set_defaults(maxnodes=2)
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parser.add_option("-n", "--maxnodes", dest="maxnodes", type=int,
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help="max number of nodes to test; default = %s" %
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parser.defaults["maxnodes"])
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parser.set_defaults(testsec=10)
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parser.add_option("-t", "--testsec", dest="testsec", type=int,
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help="test time in seconds; default = %s" %
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parser.defaults["testsec"])
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parser.set_defaults(nodestep=1)
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parser.add_option("-s", "--nodestep", dest="nodestep", type=int,
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help="number of nodes step size; default = %s" %
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parser.defaults["nodestep"])
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def usage(msg=None, err=0):
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sys.stdout.write("\n")
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if msg:
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sys.stdout.write(msg + "\n\n")
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parser.print_help()
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sys.exit(err)
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# parse command line options
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(options, args) = parser.parse_args()
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if options.minnodes < 2:
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usage("invalid min number of nodes: %s" % options.minnodes)
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if options.maxnodes < options.minnodes:
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usage("invalid max number of nodes: %s" % options.maxnodes)
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if options.testsec < 1:
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usage("invalid test time: %s" % options.testsec)
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if options.nodestep < 1:
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usage("invalid node step: %s" % options.nodestep)
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for a in args:
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sys.stderr.write("ignoring command line argument: '%s'\n" % a)
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start = datetime.datetime.now()
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for i in xrange(options.minnodes, options.maxnodes + 1, options.nodestep):
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print >> sys.stderr, "%s node test:" % i
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test(i, options.testsec)
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print >> sys.stderr, ""
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print >> sys.stderr, "elapsed time: %s" % (datetime.datetime.now() - start)
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if __name__ == "__main__":
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# configure nodes to use
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node_map = nodemaps.CLASSIC_NODES
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nodeutils.set_node_map(node_map)
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main()
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