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40 results

benchmark.py

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    benchmark.py 9.19 KiB
    # -*- coding: utf-8 -*-
    #!/usr/bin/env python3
    # Copyright (C) 2015-2016 Savoir-faire Linux Inc.
    # Author(s): Adrien Béraud <adrien.beraud@savoirfairelinux.com>
    #            Simon Désaulniers <sim.desaulniers@gmail.com>
    #
    # This program is free software; you can redistribute it and/or modify
    # it under the terms of the GNU General Public License as published by
    # the Free Software Foundation; either version 3 of the License, or
    # (at your option) any later version.
    #
    # This program is distributed in the hope that it will be useful,
    # but WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    # GNU General Public License for more details.
    #
    # You should have received a copy of the GNU General Public License
    # along with this program; If not, see <http://www.gnu.org/licenses/>.
    
    import os
    import sys
    import subprocess
    import signal
    import argparse
    import time
    import random
    
    from dht.network import DhtNetwork
    from dht.network import DhtNetworkSubProcess
    from dht.tests import PerformanceTest, PersistenceTest
    from dht import virtual_network_builder
    from dht import network as dhtnetwork
    
    from opendht import *
    
    
    class WorkBench():
        """
        This contains the initialisation information, such as ipv4/ipv6, number of
        nodes and cluster to create, etc. This class is also used to initialise and
        finish the network.
        """
        def __init__(self, ifname='ethdht', virtual_locs=8, node_num=32, remote_bootstrap=None, loss=0, delay=0, disable_ipv4=False,
                disable_ipv6=False):
            self.ifname       = ifname
            self.virtual_locs = virtual_locs
            self.node_num     = node_num
            self.clusters     = min(virtual_locs, node_num)
            self.node_per_loc = int(self.node_num / self.clusters)
            self.loss         = loss
            self.delay        = delay
            self.disable_ipv4 = disable_ipv4
            self.disable_ipv6 = disable_ipv6
    
            self.remote_bootstrap = remote_bootstrap
            self.local_bootstrap  = None
            self.bs_port          = "5000"
            self.procs            = [None for _ in range(self.clusters)]
    
        def get_bootstrap(self):
            if not self.local_bootstrap:
                self.local_bootstrap = DhtNetwork(iface='br'+self.ifname,
                        first_bootstrap=False if self.remote_bootstrap else True,
                        bootstrap=[(self.remote_bootstrap, self.bs_port)] if self.remote_bootstrap else [])
            return self.local_bootstrap
    
        def create_virtual_net(self):
            if self.virtual_locs > 1:
                cmd = ["python3", os.path.abspath(virtual_network_builder.__file__), "-i", self.ifname, "-n", str(self.clusters), '-l', str(self.loss), '-d', str(self.delay)]
                if not self.disable_ipv4:
                    cmd.append('-4')
                if not self.disable_ipv6:
                    cmd.append('-6')
                print(cmd)
                p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
                output, err = p.communicate()
                print(output.decode())
    
        def destroy_virtual_net(self):
            print('Shuting down the virtual IP network.')
            subprocess.call(["python3", os.path.abspath(virtual_network_builder.__file__), "-i", self.ifname, "-n", str(self.clusters), "-r"])
    
        def start_cluster(self, i):
            if self.local_bootstrap:
                cmd = ["python3", os.path.abspath(dhtnetwork.__file__), "-n", str(self.node_per_loc), '-I', self.ifname+str(i)+'.1']
                if self.remote_bootstrap:
                    cmd.extend(['-b', self.remote_bootstrap, '-bp', "5000"])
                else:
                    if not self.disable_ipv4 and self.local_bootstrap.ip4:
                        cmd.extend(['-b', self.local_bootstrap.ip4])
                    if not self.disable_ipv6 and self.local_bootstrap.ip6:
                        cmd.extend(['-b6', self.local_bootstrap.ip6])
                self.procs[i] = DhtNetworkSubProcess('node'+str(i), cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
                while DhtNetworkSubProcess.NOTIFY_TOKEN not in self.procs[i].getline():
                    # waiting for process to spawn
                    time.sleep(0.5)
            else:
                raise Exception('First create bootstrap.')
    
        def stop_cluster(self, i):
            """
            Stops a cluster sub process. All nodes are put down without graceful
            shutdown.
            """
            if self.procs[i]:
                try:
                    self.procs[i].quit()
                except Exception as e:
                    print(e)
                self.procs[i] = None
    
        def replace_cluster(self):
            """
            Same as stop_cluster(), but creates a new cluster right after.
            """
            n = random.randrange(0, self.clusters)
            self.stop_cluster(n)
            self.start_cluster(n)
    
        def resize_clusters(self, n):
            """
            Resizes the list of clusters to be of length ``n``.
            """
            procs_count = len(self.procs)
            if procs_count < n:
                for i in range(n-procs_count):
                    self.procs.append(None)
                    self.start_cluster(procs_count+i)
            else:
                for i in range(procs_count-n):
                    self.stop_cluster(procs_count-i-1)
    
    
    if __name__ == '__main__':
        parser = argparse.ArgumentParser(description='Run, test and benchmark a '\
                'DHT network on a local virtual network with simulated packet '\
                'loss and latency.')
        ifConfArgs = parser.add_argument_group('Virtual interface configuration')
        ifConfArgs.add_argument('-i', '--ifname', default='ethdht', help='interface name')
        ifConfArgs.add_argument('-n', '--node-num', type=int, default=32, help='number of dht nodes to run')
        ifConfArgs.add_argument('-v', '--virtual-locs', type=int, default=8,
                help='number of virtual locations (node clusters)')
        ifConfArgs.add_argument('-l', '--loss', type=int, default=0, help='simulated cluster packet loss (percent)')
        ifConfArgs.add_argument('-d', '--delay', type=int, default=0, help='simulated cluster latency (ms)')
        ifConfArgs.add_argument('-b', '--bootstrap', default=None, help='Bootstrap node to use (if any)')
        ifConfArgs.add_argument('-no4', '--disable-ipv4', action="store_true", help='Enable IPv4')
        ifConfArgs.add_argument('-no6', '--disable-ipv6', action="store_true", help='Enable IPv6')
    
        testArgs = parser.add_argument_group('Test arguments')
        testArgs.add_argument('--bs-dht-log', action='store_true', default=False, help='Enables dht log in bootstrap.')
        testArgs.add_argument('-t', '--test', type=str, default=None, required=True, help='Specifies the test.')
        testArgs.add_argument('-o', '--opt', type=str, default=[], nargs='+',
                help='Options passed to tests routines.')
        testArgs.add_argument('-m', type=int, default=None, help='Generic size option passed to tests.')
        testArgs.add_argument('-e', type=int, default=None, help='Generic size option passed to tests.')
    
        featureArgs = parser.add_mutually_exclusive_group(required=True)
        featureArgs.add_argument('--performance', action='store_true', default=False,
                help='Launches performance benchmark test. Available args for "-t" are: gets.')
        featureArgs.add_argument('--data-persistence', action='store_true', default=0,
                help='Launches data persistence benchmark test. '\
                     'Available args for "-t" are: delete, replace, mult_time. '\
                     'Available args for "-o" are : dump_str_log, keep_alive, trigger, traffic_plot, op_plot. '\
                     'Use "-m" to specify the number of producers on the DHT.'\
                     'Use "-e" to specify the number of values to put on the DHT.')
    
        args = parser.parse_args()
        test_opt = { o : True for o in args.opt }
    
        wb = WorkBench(args.ifname, args.virtual_locs, args.node_num, loss=args.loss,
                delay=args.delay, disable_ipv4=args.disable_ipv4,
                disable_ipv6=args.disable_ipv6)
        bootstrap = wb.get_bootstrap()
    
        bs_dht_log_enabled = False
        def toggle_bs_dht_log(signum, frame):
            global bs_dht_log_enabled, bootstrap
            if bs_dht_log_enabled:
                bootstrap.front().disableLogging()
                bs_dht_log_enabled = False
            else:
                bootstrap.front().enableLogging()
                bs_dht_log_enabled = True
        signal.signal(signal.SIGUSR1, toggle_bs_dht_log)
    
        if args.bs_dht_log:
            bs_dht_log_enabled = True
            bootstrap.front().enableLogging()
    
        wb.create_virtual_net()
        bootstrap.resize(1)
        print("Launching", wb.node_num, "nodes (", wb.clusters, "clusters of", wb.node_per_loc, "nodes)")
    
        try:
            for i in range(wb.clusters):
                wb.start_cluster(i)
    
            # recover -e and -m values.
            if args.e:
                test_opt.update({ 'num_values' : args.e })
            if args.m:
                test_opt.update({ 'num_producers' : args.m })
    
            # run the test
            if args.performance:
                PerformanceTest(args.test, wb, test_opt).run()
            elif args.data_persistence:
                PersistenceTest(args.test, wb, test_opt).run()
    
        except Exception as e:
            print(e)
        finally:
            for p in wb.procs:
                if p:
                    p.quit()
            bootstrap.resize(0)
            sys.stdout.write('Shutting down the virtual IP network... ')
            sys.stdout.flush()
            wb.destroy_virtual_net()
            print('Done.')