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##############################################################################
# Copyright (c) 2016 ZTE corporation and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
from __future__ import absolute_import
import pkg_resources
import logging
import time
import yardstick.ssh as ssh
from yardstick.benchmark.scenarios import base
LOG = logging.getLogger(__name__)
class PktgenDPDKLatency(base.Scenario):
"""Execute pktgen-dpdk on one vm and execute testpmd on the other vm
Parameters
packetsize - packet size in bytes without the CRC
type: int
unit: bytes
default: 64
"""
__scenario_type__ = "PktgenDPDKLatency"
PKTGEN_DPDK_SCRIPT = 'pktgen_dpdk_latency_benchmark.bash'
TESTPMD_SCRIPT = 'testpmd_fwd.bash'
def __init__(self, scenario_cfg, context_cfg):
self.scenario_cfg = scenario_cfg
self.context_cfg = context_cfg
self.setup_done = False
def setup(self):
"""scenario setup"""
self.pktgen_dpdk_script = pkg_resources.resource_filename(
'yardstick.benchmark.scenarios.networking',
PktgenDPDKLatency.PKTGEN_DPDK_SCRIPT)
self.testpmd_script = pkg_resources.resource_filename(
'yardstick.benchmark.scenarios.networking',
PktgenDPDKLatency.TESTPMD_SCRIPT)
host = self.context_cfg['host']
host_user = host.get('user', 'ubuntu')
host_ssh_port = host.get('ssh_port', ssh.DEFAULT_PORT)
host_ip = host.get('ip', None)
host_key_filename = host.get('key_filename', '~/.ssh/id_rsa')
target = self.context_cfg['target']
target_user = target.get('user', 'ubuntu')
target_ssh_port = target.get('ssh_port', ssh.DEFAULT_PORT)
target_ip = target.get('ip', None)
target_key_filename = target.get('key_filename', '~/.ssh/id_rsa')
LOG.info("user:%s, target:%s", target_user, target_ip)
self.server = ssh.SSH(target_user, target_ip,
key_filename=target_key_filename,
port=target_ssh_port)
self.server.wait(timeout=600)
# copy script to host
self.server._put_file_shell(self.testpmd_script, '~/testpmd_fwd.sh')
LOG.info("user:%s, host:%s", host_user, host_ip)
self.client = ssh.SSH(host_user, host_ip,
key_filename=host_key_filename,
port=host_ssh_port)
self.client.wait(timeout=600)
# copy script to host
self.client._put_file_shell(
self.pktgen_dpdk_script, '~/pktgen_dpdk.sh')
self.setup_done = True
self.testpmd_args = ''
self.pktgen_args = []
@staticmethod
def get_port_mac(sshclient, port):
cmd = "ifconfig |grep HWaddr |grep %s |awk '{print $5}' " % port
LOG.debug("Executing command: %s", cmd)
status, stdout, stderr = sshclient.execute(cmd)
if status:
raise RuntimeError(stderr)
else:
return stdout.rstrip()
@staticmethod
def get_port_ip(sshclient, port):
cmd = "ifconfig %s |grep 'inet addr' |awk '{print $2}' \
|cut -d ':' -f2 " % port
LOG.debug("Executing command: %s", cmd)
status, stdout, stderr = sshclient.execute(cmd)
if status:
raise RuntimeError(stderr)
else:
return stdout.rstrip()
def run(self, result):
"""execute the benchmark"""
if not self.setup_done:
self.setup()
if not self.testpmd_args:
self.testpmd_args = self.get_port_mac(self.client, 'eth2')
if not self.pktgen_args:
server_rev_mac = self.get_port_mac(self.server, 'eth1')
server_send_mac = self.get_port_mac(self.server, 'eth2')
client_src_ip = self.get_port_ip(self.client, 'eth1')
client_dst_ip = self.get_port_ip(self.client, 'eth2')
self.pktgen_args = [client_src_ip, client_dst_ip,
server_rev_mac, server_send_mac]
options = self.scenario_cfg['options']
packetsize = options.get("packetsize", 64)
rate = options.get("rate", 100)
cmd = "screen sudo -E bash ~/testpmd_fwd.sh %s " % (self.testpmd_args)
LOG.debug("Executing command: %s", cmd)
self.server.send_command(cmd)
time.sleep(1)
cmd = "screen sudo -E bash ~/pktgen_dpdk.sh %s %s %s %s %s %s" % \
(self.pktgen_args[0], self.pktgen_args[1], self.pktgen_args[2],
self.pktgen_args[3], rate, packetsize)
LOG.debug("Executing command: %s", cmd)
self.client.send_command(cmd)
# wait for finishing test
time.sleep(1)
cmd = "cat ~/result.log -vT \
|awk '{match($0,/\[8;40H +[0-9]+/)} \
{print substr($0,RSTART,RLENGTH)}' \
|grep -v ^$ |awk '{if ($2 != 0) print $2}'"
client_status, client_stdout, client_stderr = self.client.execute(cmd)
if client_status:
raise RuntimeError(client_stderr)
avg_latency = 0
if client_stdout:
latency_list = client_stdout.split('\n')[0:-2]
LOG.info("10 samples of latency: %s", latency_list)
latency_sum = 0
for i in latency_list:
latency_sum += int(i)
avg_latency = latency_sum / len(latency_list)
result.update({"avg_latency": avg_latency})
if avg_latency and "sla" in self.scenario_cfg:
sla_max_latency = int(self.scenario_cfg["sla"]["max_latency"])
LOG.info("avg_latency : %d ", avg_latency)
LOG.info("sla_max_latency: %d", sla_max_latency)
debug_info = "avg_latency %d > sla_max_latency %d" \
% (avg_latency, sla_max_latency)
assert avg_latency <= sla_max_latency, debug_info
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