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# Copyright (c) 2014 Mirantis Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import atexit
import math
import os
import subprocess
import sys
import timeit
from oslo_rootwrap import client
config_path = "rootwrap.conf"
num_iterations = 100
def run_plain(cmd):
obj = subprocess.Popen(
cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
out, err = obj.communicate()
out = os.fsdecode(out)
err = os.fsdecode(err)
return obj.returncode, out, err
def run_sudo(cmd):
return run_plain(["sudo"] + cmd)
def run_rootwrap(cmd):
return run_plain(
[
"sudo",
sys.executable,
"-c",
"from oslo_rootwrap import cmd; cmd.main()",
config_path,
]
+ cmd
)
run_daemon = client.Client(
[
"sudo",
sys.executable,
"-c",
"from oslo_rootwrap import cmd; cmd.daemon()",
config_path,
]
).execute
def run_one(runner, cmd):
def __inner():
code, out, err = runner(cmd)
assert err == "", "Stderr not empty:\n" + err
assert code == 0, "Command failed"
return __inner
runners = [
("{0}", run_plain),
("sudo {0}", run_sudo),
("sudo rootwrap conf {0}", run_rootwrap),
("daemon.run('{0}')", run_daemon),
]
def get_time_string(sec):
if sec > 0.9:
return f"{sec:7.3f}s "
elif sec > 0.0009:
return f"{sec * 1000.0:7.3f}ms"
else:
return f"{sec * 1000000.0:7.3f}us"
def run_bench(cmd, runners):
strcmd = ' '.join(cmd)
max_name_len = max(len(name) for name, _ in runners) + len(strcmd) - 3
print(f"Running '{strcmd}':")
print(
"{0:^{1}} :".format("method", max_name_len),
"".join(map("{:^10}".format, ["min", "avg", "max", "dev"])),
)
for name, runner in runners:
results = timeit.repeat(
run_one(runner, cmd), repeat=num_iterations, number=1
)
avg = sum(results) / num_iterations
min_ = min(results)
max_ = max(results)
dev = math.sqrt(sum((r - avg) ** 2 for r in results) / num_iterations)
print(
"{0:>{1}} :".format(name.format(strcmd), max_name_len),
" ".join(map(get_time_string, [min_, avg, max_, dev])),
)
def main():
os.chdir(os.path.dirname(__file__))
code, _, _ = run_sudo(["-vn"])
if code:
print("We need you to authorize with sudo to run this benchmark")
run_sudo(["-v"])
run_bench(["ip", "a"], runners)
run_sudo(["ip", "netns", "add", "bench_ns"])
atexit.register(run_sudo, ["ip", "netns", "delete", "bench_ns"])
run_bench('ip netns exec bench_ns ip a'.split(), runners[1:])
if __name__ == "__main__":
main()
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