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'''
Measure file service throughput over local, sudo, and (un)compressed SSH.
'''
import getpass
import os
import tempfile
import mitogen
import mitogen.core
import mitogen.service
import ansible_mitogen.affinity
def prepare():
pass
def transfer(context, path):
fp = open('/dev/null', 'wb')
mitogen.service.FileService.get(context, path, fp)
fp.close()
def fill_with_random(fp, size):
n = 0
s = os.urandom(1048576*16)
while n < size:
fp.write(s)
n += len(s)
def run_test(router, fp, s, context):
fp.seek(0, 2)
size = fp.tell()
print('Testing %s...' % (s,))
context.call(prepare)
t0 = mitogen.core.now()
context.call(transfer, router.myself(), fp.name)
t1 = mitogen.core.now()
print('%s took %.2f ms to transfer %.2f MiB, %.2f MiB/s' % (
s, 1000 * (t1 - t0), size / 1048576.0,
(size / (t1 - t0) / 1048576.0),
))
@mitogen.main()
def main(router):
import optparse
parser = optparse.OptionParser(description=__doc__)
parser.add_option(
'--ssh-python', metavar='CMD', default='python3',
help='Remote python path (default %default)')
parser.add_option(
'--ssh-user', metavar='S', default=getpass.getuser(),
help='Remote username (default %default)')
parser.add_option(
'--sudo-user', metavar='S', default='root',
help='Sudo username (default %default)')
parser.add_option('--debug', action='store_true')
opts, args = parser.parse_args()
ansible_mitogen.affinity.policy.assign_muxprocess()
bigfile = tempfile.NamedTemporaryFile()
fill_with_random(bigfile, 1048576*512)
file_service = mitogen.service.FileService(router)
pool = mitogen.service.Pool(router, ())
file_service.register(bigfile.name)
pool.add(file_service)
try:
context = router.local(debug=opts.debug)
run_test(router, bigfile, 'local()', context)
context.shutdown(wait=True)
context = router.sudo(username=opts.sudo_user, debug=opts.debug)
run_test(router, bigfile, 'sudo()', context)
context.shutdown(wait=True)
context = router.ssh(
hostname=args[0],
python_path=opts.ssh_python,
username=opts.ssh_user,
compression=False, debug=opts.debug,
)
run_test(router, bigfile, 'ssh(compression=False)', context)
context.shutdown(wait=True)
context = router.ssh(
hostname=args[0],
python_path=opts.ssh_python,
username=opts.ssh_user,
compression=True, debug=opts.debug,
)
run_test(router, bigfile, 'ssh(compression=True)', context)
context.shutdown(wait=True)
finally:
pool.stop()
bigfile.close()
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