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#!/usr/bin/env python3
# Copyright (c) 2021 Intel and/or its affiliates.
# 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.
"""ab fork library."""
from multiprocessing import Pool
import subprocess
import argparse
import re
REGEX_RPS = r"Requests per second:\s*" \
r"(\d*\.*\S*)"
REGEX_LATENCY = r"Time per request:\s*" \
r"(\d*\.*\S*)"
REGEX_PROCESS = r"Time per request:\s*" \
r"(\d*\.*\S*)"
REGEX_TR = r"Transfer rate:\s*" \
r"(\d*\.*\S*)"
REGEX_TT = r"Total transferred:\s*" \
r"(\d*)"
REGEX_OK_NUM = r"Complete requests:\s*" \
r"(\d*)"
REGEX_FAILED_NUM = r"Failed requests:\s*" \
r"(\d*)"
REGEX_NUM = r"(\d*\.*\d*)(\D*)"
def main():
""" main function. get option and run ab test.
:returns: Nothing.
"""
# Get option.
parser = argparse.ArgumentParser(description=u"Get option and run ab test")
# Number of requests to perform.
parser.add_argument(u"-r", u"--requests", type=int,
required=True, help=u"Number of requests to perform.")
# Server port number to use.
parser.add_argument(u"-p", u"--port", type=int, required=True,
help=u"Server port number to use.")
# Number of clients being processed at the same time.
parser.add_argument(u"-c", u"--clients", type=int, required=True,
help=u"Number of clients being processed at "
u"the same time.")
# Filename to be requested from the servers.
parser.add_argument(u"-f", u"--files", type=str, required=True,
help="Filename to be requested from the servers.")
# Server ip address.
parser.add_argument(u"-i", u"--ip", type=str, required=True,
help=u"Server bind IP address.")
# Tg ip address.
parser.add_argument(u"-g", u"--tip", type=str, required=True,
help=u"TG bind IP address.")
# Specify SSL/TLS cipher suite.
parser.add_argument(u"-z", u"--cipher", type=str, default=u"0",
help=u"Specify SSL/TLS cipher.")
# Specify SSL/TLS protocol.
parser.add_argument(u"-t", u"--protocol", type=str, default=u"0",
help=u"Specify SSL/TLS protocol.")
# Mode: RPS or CPS.
parser.add_argument(u"-m", u"--mode", type=str, required=True,
help=u"Send requests mode:RPS/CPS.")
args = parser.parse_args()
req_num = args.requests
port = args.port
cli_num = args.clients
files = args.files
ip_address = args.ip
tg_address = args.tip
cipher = args.cipher
protocol = args.protocol
mode = args.mode
if req_num == 0:
print(u"Failed number of req_num!")
return 1
# The number of processing units available to the current process.
_, cpu_num = subprocess.getstatusoutput(u"nproc --all")
cpu_num = int(cpu_num)
if cpu_num > 70:
cpu_num = 70
# Requests and Clients are evenly distributed on each CPU.
per_req = round(req_num / cpu_num)
per_cli = round(cli_num / cpu_num)
# Revise rounding request, This will be in the first ab request
all_total = per_req * cpu_num
per_req_1st = per_req + (req_num - all_total)
results = []
# Start process pool.
pool = Pool(processes=cpu_num)
for i in range(1, cpu_num + 1):
results.append(
pool.apply_async(one, (
i, per_req_1st if i == 1 else per_req, per_cli, cipher,
protocol, ip_address, tg_address, files, port, mode)))
pool.close()
pool.join()
info_list = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
# Statistical test results.
for res in results:
stats = res.get()
if stats:
info_list = [a + b for a, b in zip(info_list, stats)]
# Output results.
print(f"Transfer Rate: {round(info_list[6], 2)} [Kbytes/sec]")
print(f"Latency: {round(info_list[4] / 8, 2)} ms")
print(f"Connection {mode} rate:{round(info_list[3], 2)} per sec")
print(f"Total data transferred: {round(info_list[2])} bytes")
print(f"Completed requests: {round(info_list[0])} ")
print(f"Failed requests: {round(info_list[1])} ")
def one(cpu, requests, clients, cipher, protocol, ip_addr, tg_addr, files, port,
mode):
"""Run one test.
:param cpu: Core number id.
:param requests: Request number.
:param clients: Clients number.
:param cipher: Specify SSL/TLS cipher suite.
:param protocol: Specify SSL/TLS protocol.
:param ip_addr: Server ip address.
:param tg_addr: Tg ip address.
:param files: Filename to be requested from the servers.
:param port: Server port.
:type cpu: int
:type requests: int
:type clients: int
:type cipher: str
:type protocol: str
:type ip_addr: str
:type tg_addr: str
:type files: str
:type port: int
:type mode: str
:returns: Test results.
:rtype: list
"""
cmd = f"sudo -E -S taskset --cpu-list {cpu} ab -n {requests} -c {clients}"
cmd = f"{cmd} -B {tg_addr} -r "
if mode == u"rps":
cmd = f"{cmd} -k"
if port == 80:
cmd = f"{cmd} http://{ip_addr}:{port}/{files}"
else:
cmd = f"{cmd} -Z {cipher} -f {protocol}"
cmd = f"{cmd} https://{ip_addr}:{port}/{files}"
_, output = subprocess.getstatusoutput(cmd)
ret = _parse_output(output)
return ret
def _parse_output(msg):
"""Parse the stdout with the results.
:param msg: stdout of ab.
:type msg: str
:returns: Parsed results.
:rtype: list
"""
msg_lst = msg.splitlines(False)
stats = []
for line in msg_lst:
if u"Requests per second" in line:
stats.append(
_float_number(re.search(REGEX_RPS, line).group(1))
)
elif u"Time per request" in line:
stats.append(
_float_number(re.search(REGEX_LATENCY, line).group(1))
)
elif u"Transfer rate" in line:
stats.append(
_float_number(re.search(REGEX_TR, line).group(1))
)
elif u"Total transferred" in line:
stats.append(
_float_number(re.search(REGEX_TT, line).group(1))
)
elif u"Complete requests" in line:
stats.append(
_float_number(re.search(REGEX_OK_NUM, line).group(1))
)
elif u"Failed requests" in line:
stats.append(
_float_number(re.search(REGEX_FAILED_NUM, line).group(1))
)
return stats
def _float_number(num):
"""float value of the number.
:param num: Number to evaluate.
:type num: str
:returns: float number.
:rtype: float
"""
val = re.search(REGEX_NUM, num)
try:
val_num = float(val.group(1))
except ValueError:
raise RuntimeError(u"The output of ab does not include the results.")
return val_num
if __name__ == "__main__":
main()
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