97 lines
3.3 KiB
Python
Executable file
97 lines
3.3 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 optparse, sys, os, datetime
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from core import pycore
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from core.misc import ipaddr
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from core.misc.utils import mutecall
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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 = ipaddr.IPv4Prefix("10.83.0.0/16")
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session = pycore.Session()
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# emulated network
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net = session.addobj(cls = pycore.nodes.SwitchNode)
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for i in xrange(1, numnodes + 1):
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tmp = session.addobj(cls = pycore.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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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, \
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"elapsed time: %s" % (datetime.datetime.now() - start)
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if __name__ == "__main__":
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main()
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