def run_second_side(self, send_manager, recv_manager, second_cmds):
time.sleep(self.run_first_setup_time)
start_time = time.time()
self.test_start_time = utc_time()
# start each flow self.interval seconds after the previous one
for i in xrange(len(second_cmds)):
if i != 0:
time.sleep(self.interval)
second_cmd = second_cmds[i]
if self.run_first == 'receiver':
send_manager.stdin.write(second_cmd)
send_manager.stdin.flush()
else:
recv_manager.stdin.write(second_cmd)
recv_manager.stdin.flush()
elapsed_time = time.time() - start_time
if elapsed_time > self.runtime:
sys.stderr.write('Interval time between flows is too long')
return False
time.sleep(self.runtime - elapsed_time)
self.test_end_time = utc_time()
return True
def run_without_tunnel(self):
port = get_open_port()
# run the side specified by self.run_first
cmd = ['python', self.cc_src, self.run_first, port]
sys.stderr.write('Running %s %s...\n' % (self.cc, self.run_first))
self.proc_first = Popen(cmd, preexec_fn=os.setsid)
# sleep just in case the process isn't quite listening yet
# the cleaner approach might be to try to verify the socket is open
time.sleep(self.run_first_setup_time)
self.test_start_time = utc_time()
# run the other side specified by self.run_second
sh_cmd = 'python %s %s $MAHIMAHI_BASE %s' % (self.cc_src,
self.run_second, port)
sh_cmd = ' '.join(self.mm_cmd) + " -- sh -c '%s'" % sh_cmd
sys.stderr.write('Running %s %s...\n' % (self.cc, self.run_second))
self.proc_second = Popen(sh_cmd, shell=True, preexec_fn=os.setsid)
signal.signal(signal.SIGALRM, timeout_handler)
signal.alarm(self.runtime)
try:
self.proc_first.wait()
self.proc_second.wait()
except TimeoutError:
pass
else:
signal.alarm(0)
sys.stderr.write('Warning: test exited before time limit\n')
finally:
self.test_end_time = utc_time()
return True
def run_second_side(self, send_manager, recv_manager, second_cmds):
time.sleep(self.run_first_setup_time)
start_time = time.time()
self.test_start_time = utc_time()
# start each flow self.interval seconds after the previous one
for i in xrange(len(second_cmds)):
if i != 0:
time.sleep(self.interval)
second_cmd = second_cmds[i]
if self.run_first == 'receiver':
send_manager.stdin.write(second_cmd)
send_manager.stdin.flush()
else:
recv_manager.stdin.write(second_cmd)
recv_manager.stdin.flush()
elapsed_time = time.time() - start_time
if elapsed_time > self.runtime:
sys.stderr.write('Interval time between flows is too long')
return False
time.sleep(self.runtime - elapsed_time)
self.test_end_time = utc_time()
return True
def run_without_tunnel(self):
port = get_open_port()
# run the side specified by self.run_first
cmd = ['python', self.cc_src, self.run_first, port]
sys.stderr.write('Running %s %s...\n' % (self.cc, self.run_first))
self.proc_first = Popen(cmd, preexec_fn=os.setsid)
# sleep just in case the process isn't quite listening yet
# the cleaner approach might be to try to verify the socket is open
time.sleep(self.run_first_setup_time)
self.test_start_time = utc_time()
# run the other side specified by self.run_second
sh_cmd = 'python %s %s $MAHIMAHI_BASE %s' % (
self.cc_src, self.run_second, port)
sh_cmd = ' '.join(self.mm_cmd) + " -- sh -c '%s'" % sh_cmd
sys.stderr.write('Running %s %s...\n' % (self.cc, self.run_second))
self.proc_second = Popen(sh_cmd, shell=True, preexec_fn=os.setsid)
signal.signal(signal.SIGALRM, timeout_handler)
signal.alarm(self.runtime)
try:
self.proc_first.wait()
self.proc_second.wait()
except TimeoutError:
pass
else:
signal.alarm(0)
sys.stderr.write('Warning: test exited before time limit\n')
finally:
self.test_end_time = utc_time()
return True
def update_stats_log(self, cc, run_id, stats):
stats_log_path = path.join(self.data_dir,
'%s_stats_run%s.log' % (cc, run_id))
if not path.isfile(stats_log_path):
sys.stderr.write('Warning: %s does not exist\n' % stats_log_path)
return None
saved_lines = ''
# back up old stats logs
with open(stats_log_path) as stats_log:
for line in stats_log:
if any([
x in line
for x in ['Start at:', 'End at:', 'clock offset:']
]):
saved_lines += line
else:
continue
# write to new stats log
with open(stats_log_path, 'w') as stats_log:
stats_log.write(saved_lines)
if stats:
stats_log.write('\n# Below is generated by %s at %s\n' %
(path.basename(__file__), utc_time()))
stats_log.write('# Datalink statistics\n')
stats_log.write('%s' % stats)
def update_stats_log(self, cc, run_id, stats):
stats_log_path = path.join(
self.data_dir, '%s_stats_run%s.log' % (cc, run_id))
if not path.isfile(stats_log_path):
sys.stderr.write('Warning: %s does not exist\n' % stats_log_path)
return None
saved_lines = ''
# back up old stats logs
with open(stats_log_path) as stats_log:
for line in stats_log:
if any([x in line for x in [
'Start at:', 'End at:', 'clock offset:']]):
saved_lines += line
else:
continue
# write to new stats log
with open(stats_log_path, 'w') as stats_log:
stats_log.write(saved_lines)
if stats:
stats_log.write('\n# Below is generated by %s at %s\n' %
(path.basename(__file__), utc_time()))
stats_log.write('# Datalink statistics\n')
stats_log.write('%s' % stats)
def describe_metadata(self):
desc = '\\centerline{\\textbf{\\large{Pantheon Report}}}\n'
desc += '\\vspace{20pt}\n\n'
desc += 'Generated at %s (UTC).\n\n' % utc_time()
meta = self.meta
if meta['mode'] == 'local':
mm_cmd = []
if 'prepend_mm_cmds' in meta:
mm_cmd.append(meta['prepend_mm_cmds'])
mm_cmd += ['mm-link', meta['uplink_trace'], meta['downlink_trace']]
if 'extra_mm_link_args' in meta:
mm_cmd.append(meta['extra_mm_link_args'])
if 'append_mm_cmds' in meta:
mm_cmd.append(meta['append_mm_cmds'])
mm_cmd = ' '.join(mm_cmd).replace('_', '\\_')
desc += 'Tested in mahimahi: \\texttt{%s}\n\n' % mm_cmd
elif meta['mode'] == 'remote':
txt = {}
for side in ['local', 'remote']:
txt[side] = []
if '%s_desc' % side in meta:
txt[side].append(meta['%s_desc' % side])
if '%s_if' % side in meta:
txt[side].append(meta['%s_if' % side])
else:
txt[side].append('Ethernet')
txt[side] = ' '.join(txt[side]).replace('_', '\\_')
if meta['sender_side'] == 'remote':
desc += ('Data path: %s (\\textit{remote}) \\textrightarrow '
'%s (\\textit{local}).\n\n') % (
txt['remote'], txt['local'])
else:
desc += ('Data path: %s (\\textit{local}) \\textrightarrow '
'%s (\\textit{remote}).\n\n') % (
txt['local'], txt['remote'])
if meta['flows'] == 1:
flows = '1 flow'
else:
flows = ('%s flows with %s-second interval between two flows' %
(meta['flows'], meta['interval']))
if meta['runtime'] == 1:
runtime = '1 second'
else:
runtime = '%s seconds' % meta['runtime']
run_times = meta['run_times']
if run_times == 1:
times = 'once'
elif run_times == 2:
times = 'twice'
else:
times = '%s times' % run_times
desc += (
'Repeated the test of %d congestion control schemes %s.\n\n'
'Each test lasted for %s running %s.\n\n'
% (len(self.cc_schemes), times, runtime, flows))
desc += (
'Increased UDP receive buffer to 16 MB (default) and '
'32 MB (max).\n\n'
'Tested BBR with qdisc of Fair Queuing (\\texttt{fq}), and '
'other schemes with the default Linux qdisc '
'(\\texttt{pfifo\_fast}).\n\n')
if 'ntp_addr' in meta:
desc += ('NTP offsets were measured against \\texttt{%s} and have '
'been applied to correct the timestamps in logs.\n\n'
% meta['ntp_addr'])
desc += (
'\\begin{verbatim}\n'
'Git summary:\n'
'%s'
'\\end{verbatim}\n\n' % meta['git_summary'])
desc += '\\newpage\n\n'
return desc