# under the License.
"""Interface to the traffic generator clients including NDR/PDR binary search."""
-
-from datetime import datetime
import socket
import struct
import time
+import sys
from attrdict import AttrDict
import bitmath
+from hdrh.histogram import HdrHistogram
from netaddr import IPNetwork
# pylint: disable=import-error
from trex.stl.api import Ether
from .stats_collector import IntervalCollector
from .stats_collector import IterationCollector
from .traffic_gen import traffic_utils as utils
-from .utils import cast_integer
+from .utils import cast_integer, find_max_size, find_tuples_equal_to_lcm_value, get_divisors, lcm
class TrafficClientException(Exception):
"""Generic traffic client exception."""
return None
LOG.info('Running traffic generator')
self.client.gen.clear_stats()
- # Debug use only : new '--service-mode' option available for the NFVBench command line.
- # A read-only mode TRex console would be able to capture the generated traffic.
+ # Debug use only: the service_mode flag may have been set in
+ # the configuration, in order to enable the 'service' mode
+ # in the trex generator, before starting the traffic (run).
+ # From this point, a T-rex console (launched in readonly mode) would
+ # then be able to capture the transmitted and/or received traffic.
self.client.gen.set_service_mode(enabled=self.service_mode)
LOG.info('Service mode is %sabled', 'en' if self.service_mode else 'dis')
self.client.gen.start_traffic()
def __init__(self, base_ip, step_ip, count_ip):
"""Create an IP block."""
self.base_ip_int = Device.ip_to_int(base_ip)
+ if step_ip == 'random':
+ step_ip = '0.0.0.1'
self.step = Device.ip_to_int(step_ip)
self.max_available = count_ip
self.next_free = 0
raise IndexError('Index out of bounds: %d (max=%d)' % (index, self.max_available))
return Device.int_to_ip(self.base_ip_int + index * self.step)
+ def get_ip_from_chain_first_ip(self, first_ip, index=0):
+ """Return the IP address at given index starting from chain first ip."""
+ if index < 0 or index >= self.max_available:
+ raise IndexError('Index out of bounds: %d (max=%d)' % (index, self.max_available))
+ return Device.int_to_ip(first_ip + index * self.step)
+
def reserve_ip_range(self, count):
- """Reserve a range of count consecutive IP addresses spaced by step."""
+ """Reserve a range of count consecutive IP addresses spaced by step.
+ """
if self.next_free + count > self.max_available:
raise IndexError('No more IP addresses next free=%d max_available=%d requested=%d' %
(self.next_free,
self.next_free = 0
+class UdpPorts(object):
+
+ def __init__(self, src_min, src_max, dst_min, dst_max, udp_src_size, udp_dst_size, step):
+
+ self.src_min = int(src_min)
+ self.src_max = int(src_max)
+ self.dst_min = int(dst_min)
+ self.dst_max = int(dst_max)
+ self.udp_src_size = udp_src_size
+ self.udp_dst_size = udp_dst_size
+ self.step = step
+
+ def get_src_max(self, index=0):
+ """Return the UDP src port at given index."""
+ return int(self.src_min) + index * int(self.step)
+
+ def get_dst_max(self, index=0):
+ """Return the UDP dst port at given index."""
+ return int(self.dst_min) + index * int(self.step)
+
+
class Device(object):
"""Represent a port device and all information associated to it.
"""Create a new device for a given port."""
self.generator_config = generator_config
self.chain_count = generator_config.service_chain_count
- self.flow_count = generator_config.flow_count / 2
+ if generator_config.bidirectional:
+ self.flow_count = generator_config.flow_count / 2
+ else:
+ self.flow_count = generator_config.flow_count
+
self.port = port
self.switch_port = generator_config.interfaces[port].get('switch_port', None)
self.vtep_vlan = None
self.vnis = None
self.vlans = None
self.ip_addrs = generator_config.ip_addrs[port]
- subnet = IPNetwork(self.ip_addrs)
- self.ip = subnet.ip.format()
+ self.ip_src_static = generator_config.ip_src_static
self.ip_addrs_step = generator_config.ip_addrs_step
- self.ip_block = IpBlock(self.ip, self.ip_addrs_step, self.flow_count)
+ if self.ip_addrs_step == 'random':
+ # Set step to 1 to calculate the IP range size (see check_range_size below)
+ step = '0.0.0.1'
+ else:
+ step = self.ip_addrs_step
+ self.ip_size = self.check_range_size(IPNetwork(self.ip_addrs).size, Device.ip_to_int(step))
+ self.ip = str(IPNetwork(self.ip_addrs).network)
+ ip_addrs_left = generator_config.ip_addrs[0]
+ ip_addrs_right = generator_config.ip_addrs[1]
+ self.ip_addrs_size = {
+ 'left': self.check_range_size(IPNetwork(ip_addrs_left).size, Device.ip_to_int(step)),
+ 'right': self.check_range_size(IPNetwork(ip_addrs_right).size, Device.ip_to_int(step))}
+ udp_src_port = generator_config.gen_config.udp_src_port
+ if udp_src_port is None:
+ udp_src_port = 53
+ udp_dst_port = generator_config.gen_config.udp_dst_port
+ if udp_dst_port is None:
+ udp_dst_port = 53
+ src_max, src_min = self.define_udp_range(udp_src_port, 'udp_src_port')
+ dst_max, dst_min = self.define_udp_range(udp_dst_port, 'udp_dst_port')
+ if generator_config.gen_config.udp_port_step == 'random':
+ # Set step to 1 to calculate the UDP range size
+ udp_step = 1
+ else:
+ udp_step = int(generator_config.gen_config.udp_port_step)
+ udp_src_size = self.check_range_size(int(src_max) - int(src_min) + 1, udp_step)
+ udp_dst_size = self.check_range_size(int(dst_max) - int(dst_min) + 1, udp_step)
+ lcm_port = lcm(udp_src_size, udp_dst_size)
+ if self.ip_src_static is True:
+ lcm_ip = lcm(1, min(self.ip_addrs_size['left'], self.ip_addrs_size['right']))
+ else:
+ lcm_ip = lcm(self.ip_addrs_size['left'], self.ip_addrs_size['right'])
+ flow_max = lcm(lcm_port, lcm_ip)
+ if self.flow_count > flow_max:
+ raise TrafficClientException('Trying to set unachievable traffic (%d > %d)' %
+ (self.flow_count, flow_max))
+
+ self.udp_ports = UdpPorts(src_min, src_max, dst_min, dst_max, udp_src_size, udp_dst_size,
+ generator_config.gen_config.udp_port_step)
+
+ self.ip_block = IpBlock(self.ip, step, self.ip_size)
+
self.gw_ip_block = IpBlock(generator_config.gateway_ips[port],
generator_config.gateway_ip_addrs_step,
self.chain_count)
self.tg_gw_ip_block = IpBlock(self.tg_gateway_ip_addrs,
generator_config.tg_gateway_ip_addrs_step,
self.chain_count)
- self.udp_src_port = generator_config.udp_src_port
- self.udp_dst_port = generator_config.udp_dst_port
+
+ def limit_ip_udp_ranges(self, peer_ip_size, cur_chain_flow_count):
+ # init to min value in case of no matching values found with lcm calculation
+ new_src_ip_size = 1
+ new_peer_ip_size = 1
+ new_src_udp_size = 1
+ new_dst_udp_size = 1
+
+ if self.ip_src_static is True:
+ src_ip_size = 1
+ else:
+ src_ip_size = self.ip_size
+ ip_src_divisors = list(get_divisors(src_ip_size))
+ ip_dst_divisors = list(get_divisors(peer_ip_size))
+ udp_src_divisors = list(get_divisors(self.udp_ports.udp_src_size))
+ udp_dst_divisors = list(get_divisors(self.udp_ports.udp_dst_size))
+ fc = int(cur_chain_flow_count)
+ tuples_ip = list(find_tuples_equal_to_lcm_value(ip_src_divisors, ip_dst_divisors, fc))
+ tuples_udp = list(find_tuples_equal_to_lcm_value(udp_src_divisors, udp_dst_divisors, fc))
+
+ if tuples_ip:
+ new_src_ip_size = tuples_ip[-1][0]
+ new_peer_ip_size = tuples_ip[-1][1]
+
+ if tuples_udp:
+ new_src_udp_size = tuples_udp[-1][0]
+ new_dst_udp_size = tuples_udp[-1][1]
+
+ tuples_src = []
+ tuples_dst = []
+ if not tuples_ip and not tuples_udp:
+ # in case of not divisors in common matching LCM value (i.e. requested flow count)
+ # try to find an accurate UDP range to fit requested flow count
+ udp_src_int = range(self.udp_ports.src_min, self.udp_ports.src_max)
+ udp_dst_int = range(self.udp_ports.dst_min, self.udp_ports.dst_max)
+ tuples_src = list(find_tuples_equal_to_lcm_value(ip_src_divisors, udp_src_int, fc))
+ tuples_dst = list(find_tuples_equal_to_lcm_value(ip_dst_divisors, udp_dst_int, fc))
+
+ if not tuples_src and not tuples_dst:
+ # iterate IP and UDP ranges to find a tuple that match flow count values
+ src_ip_range = range(1,src_ip_size)
+ dst_ip_range = range(1, peer_ip_size)
+ tuples_src = list(find_tuples_equal_to_lcm_value(src_ip_range, udp_src_int, fc))
+ tuples_dst = list(find_tuples_equal_to_lcm_value(dst_ip_range, udp_dst_int, fc))
+
+ if tuples_src or tuples_dst:
+ if tuples_src:
+ new_src_ip_size = tuples_src[-1][0]
+ new_src_udp_size = tuples_src[-1][1]
+ if tuples_dst:
+ new_peer_ip_size = tuples_dst[-1][0]
+ new_dst_udp_size = tuples_dst[-1][1]
+ else:
+ if not tuples_ip:
+ if src_ip_size != 1:
+ if src_ip_size > fc:
+ new_src_ip_size = fc
+ else:
+ new_src_ip_size = find_max_size(src_ip_size, tuples_udp, fc)
+ if peer_ip_size != 1:
+ if peer_ip_size > fc:
+ new_peer_ip_size = fc
+ else:
+ new_peer_ip_size = find_max_size(peer_ip_size, tuples_udp, fc)
+
+ if not tuples_udp:
+ if self.udp_ports.udp_src_size != 1:
+ if self.udp_ports.udp_src_size > fc:
+ new_src_udp_size = fc
+ else:
+ new_src_udp_size = find_max_size(self.udp_ports.udp_src_size,
+ tuples_ip, fc)
+ if self.udp_ports.udp_dst_size != 1:
+ if self.udp_ports.udp_dst_size > fc:
+ new_dst_udp_size = fc
+ else:
+ new_dst_udp_size = find_max_size(self.udp_ports.udp_dst_size,
+ tuples_ip, fc)
+ max_possible_flows = lcm(lcm(new_src_ip_size, new_peer_ip_size),
+ lcm(new_src_udp_size, new_dst_udp_size))
+
+ LOG.debug("IP dst size: %d", new_peer_ip_size)
+ LOG.debug("LCM IP: %d", lcm(new_src_ip_size, new_peer_ip_size))
+ LOG.debug("LCM UDP: %d", lcm(new_src_udp_size, new_dst_udp_size))
+ LOG.debug("Global LCM: %d", max_possible_flows)
+ LOG.debug("IP src size: %d, IP dst size: %d, UDP src size: %d, UDP dst size: %d",
+ new_src_ip_size, new_peer_ip_size, self.udp_ports.udp_src_size,
+ self.udp_ports.udp_dst_size)
+ if not max_possible_flows == cur_chain_flow_count:
+ if (self.ip_addrs_step != '0.0.0.1' or self.udp_ports.step != '1') and not (
+ self.ip_addrs_step == 'random' and self.udp_ports.step == 'random'):
+ LOG.warning("Current values of ip_addrs_step and/or udp_port_step properties "
+ "do not allow to control an accurate flow count. "
+ "Values will be overridden as follows:")
+ if self.ip_addrs_step != '0.0.0.1':
+ LOG.info("ip_addrs_step='0.0.0.1' (previous value: ip_addrs_step='%s')",
+ self.ip_addrs_step)
+ self.ip_addrs_step = '0.0.0.1'
+
+ if self.udp_ports.step != '1':
+ LOG.info("udp_port_step='1' (previous value: udp_port_step='%s')",
+ self.udp_ports.step)
+ self.udp_ports.step = '1'
+ # override config for not logging random step warning message in trex_gen.py
+ self.generator_config.gen_config.udp_port_step = self.udp_ports.step
+ else:
+ LOG.error("Current values of ip_addrs_step and udp_port_step properties "
+ "do not allow to control an accurate flow count.")
+ else:
+ src_ip_size = new_src_ip_size
+ peer_ip_size = new_peer_ip_size
+ self.udp_ports.udp_src_size = new_src_udp_size
+ self.udp_ports.udp_dst_size = new_dst_udp_size
+ return src_ip_size, peer_ip_size
+
+ @staticmethod
+ def define_udp_range(udp_port, property_name):
+ if isinstance(udp_port, int):
+ min = udp_port
+ max = min
+ elif isinstance(udp_port, tuple):
+ min = udp_port[0]
+ max = udp_port[1]
+ else:
+ raise TrafficClientException('Invalid %s property value (53 or [\'53\',\'1024\'])'
+ % property_name)
+ return max, min
+
+
+ @staticmethod
+ def check_range_size(range_size, step):
+ """Check and set the available IPs or UDP ports, considering the step."""
+ try:
+ if range_size % step == 0:
+ value = range_size // step
+ else:
+ value = range_size // step + 1
+ return value
+ except ZeroDivisionError:
+ raise ZeroDivisionError("step can't be zero !") from ZeroDivisionError
def set_mac(self, mac):
"""Set the local MAC for this port device."""
# example 11 flows and 3 chains => 3, 4, 4
flows_per_chain = int((self.flow_count + self.chain_count - 1) / self.chain_count)
cur_chain_flow_count = int(self.flow_count - flows_per_chain * (self.chain_count - 1))
+
peer = self.get_peer_device()
self.ip_block.reset_reservation()
peer.ip_block.reset_reservation()
dest_macs = self.get_dest_macs()
+ # limit ranges of UDP ports and IP to avoid overflow of the number of flows
+ peer_size = peer.ip_size // self.chain_count
+
for chain_idx in range(self.chain_count):
- src_ip_first, src_ip_last = self.ip_block.reserve_ip_range(cur_chain_flow_count)
- dst_ip_first, dst_ip_last = peer.ip_block.reserve_ip_range(cur_chain_flow_count)
+ src_ip_size, peer_ip_size = self.limit_ip_udp_ranges(peer_size, cur_chain_flow_count)
+
+ src_ip_first, src_ip_last = self.ip_block.reserve_ip_range \
+ (src_ip_size)
+ dst_ip_first, dst_ip_last = peer.ip_block.reserve_ip_range \
+ (peer_ip_size)
+
+ if self.ip_addrs_step != 'random':
+ src_ip_last = self.ip_block.get_ip_from_chain_first_ip(
+ Device.ip_to_int(src_ip_first), src_ip_size - 1)
+ dst_ip_last = peer.ip_block.get_ip_from_chain_first_ip(
+ Device.ip_to_int(dst_ip_first), peer_ip_size - 1)
+ if self.udp_ports.step != 'random':
+ self.udp_ports.src_max = self.udp_ports.get_src_max(self.udp_ports.udp_src_size - 1)
+ self.udp_ports.dst_max = self.udp_ports.get_dst_max(self.udp_ports.udp_dst_size - 1)
+ if self.ip_src_static:
+ src_ip_last = src_ip_first
+
+ LOG.info("Port %d, chain %d: IP src range [%s,%s]", self.port, chain_idx,
+ src_ip_first, src_ip_last)
+ LOG.info("Port %d, chain %d: IP dst range [%s,%s]", self.port, chain_idx,
+ dst_ip_first, dst_ip_last)
+ LOG.info("Port %d, chain %d: UDP src range [%s,%s]", self.port, chain_idx,
+ self.udp_ports.src_min, self.udp_ports.src_max)
+ LOG.info("Port %d, chain %d: UDP dst range [%s,%s]", self.port, chain_idx,
+ self.udp_ports.dst_min, self.udp_ports.dst_max)
configs.append({
'count': cur_chain_flow_count,
'mac_dst': dest_macs[chain_idx],
'ip_src_addr': src_ip_first,
'ip_src_addr_max': src_ip_last,
- 'ip_src_count': cur_chain_flow_count,
+ 'ip_src_count': src_ip_size,
'ip_dst_addr': dst_ip_first,
'ip_dst_addr_max': dst_ip_last,
- 'ip_dst_count': cur_chain_flow_count,
+ 'ip_dst_count': peer_ip_size,
'ip_addrs_step': self.ip_addrs_step,
- 'udp_src_port': self.udp_src_port,
- 'udp_dst_port': self.udp_dst_port,
+ 'ip_src_static': self.ip_src_static,
+ 'udp_src_port': self.udp_ports.src_min,
+ 'udp_src_port_max': self.udp_ports.src_max,
+ 'udp_src_count': self.udp_ports.udp_src_size,
+ 'udp_dst_port': self.udp_ports.dst_min,
+ 'udp_dst_port_max': self.udp_ports.dst_max,
+ 'udp_dst_count': self.udp_ports.udp_dst_size,
+ 'udp_port_step': self.udp_ports.step,
'mac_discovery_gw': self.get_gw_ip(chain_idx),
'ip_src_tg_gw': self.tg_gw_ip_block.get_ip(chain_idx),
'ip_dst_tg_gw': peer.tg_gw_ip_block.get_ip(chain_idx),
self.cores = config.cores
else:
self.cores = gen_config.get('cores', 1)
+ # let's report the value actually used in the end
+ config.cores_used = self.cores
self.mbuf_factor = config.mbuf_factor
self.mbuf_64 = config.mbuf_64
self.hdrh = not config.disable_hdrh
- if gen_config.intf_speed:
- # interface speed is overriden from config
- self.intf_speed = bitmath.parse_string(gen_config.intf_speed.replace('ps', '')).bits
+ if config.intf_speed:
+ # interface speed is overriden from the command line
+ self.intf_speed = config.intf_speed
+ elif gen_config.intf_speed:
+ # interface speed is overriden from the generator config
+ self.intf_speed = gen_config.intf_speed
else:
+ self.intf_speed = "auto"
+ if self.intf_speed in ("auto", "0"):
# interface speed is discovered/provided by the traffic generator
self.intf_speed = 0
+ else:
+ self.intf_speed = bitmath.parse_string(self.intf_speed.replace('ps', '')).bits
self.name = gen_config.name
self.zmq_pub_port = gen_config.get('zmq_pub_port', 4500)
self.zmq_rpc_port = gen_config.get('zmq_rpc_port', 4501)
self.service_chain_count = config.service_chain_count
self.flow_count = config.flow_count
self.host_name = gen_config.host_name
-
+ self.bidirectional = config.traffic.bidirectional
self.tg_gateway_ip_addrs = gen_config.tg_gateway_ip_addrs
self.ip_addrs = gen_config.ip_addrs
self.ip_addrs_step = gen_config.ip_addrs_step or self.DEFAULT_SRC_DST_IP_STEP
gen_config.tg_gateway_ip_addrs_step or self.DEFAULT_IP_STEP
self.gateway_ip_addrs_step = gen_config.gateway_ip_addrs_step or self.DEFAULT_IP_STEP
self.gateway_ips = gen_config.gateway_ip_addrs
- self.udp_src_port = gen_config.udp_src_port
- self.udp_dst_port = gen_config.udp_dst_port
+ self.ip_src_static = gen_config.ip_src_static
self.vteps = gen_config.get('vteps')
self.devices = [Device(port, self) for port in [0, 1]]
# This should normally always be [0, 1]
# interface speed is overriden from config
if self.intf_speed != tg_if_speed:
# Warn the user if the speed in the config is different
- LOG.warning('Interface speed provided is different from actual speed (%d Gbps)',
- intf_speeds[0])
+ LOG.warning(
+ 'Interface speed provided (%g Gbps) is different from actual speed (%d Gbps)',
+ self.intf_speed / 1000000000.0, intf_speeds[0])
else:
# interface speed not provisioned by config
self.intf_speed = tg_if_speed
# also update the speed in the tg config
self.generator_config.intf_speed = tg_if_speed
+ # let's report detected and actually used interface speed
+ self.config.intf_speed_detected = tg_if_speed
+ self.config.intf_speed_used = self.intf_speed
# Save the traffic generator local MAC
for mac, device in zip(self.gen.get_macs(), self.generator_config.devices):
if self.config.no_latency_streams:
LOG.info("Latency streams are disabled")
+ # in service mode, we must disable flow stats (e2e=True)
self.gen.create_traffic(frame_size, self.run_config['rates'], bidirectional,
- latency=not self.config.no_latency_streams)
+ latency=not self.config.no_latency_streams,
+ e2e=self.runner.service_mode)
def _modify_load(self, load):
self.current_total_rate = {'rate_percent': str(load)}
def get_stats(self):
"""Collect final stats for previous run."""
- stats = self.gen.get_stats()
- retDict = {'total_tx_rate': stats['total_tx_rate']}
+ stats = self.gen.get_stats(self.ifstats)
+ retDict = {'total_tx_rate': stats['total_tx_rate'],
+ 'offered_tx_rate_bps': stats['offered_tx_rate_bps'],
+ 'theoretical_tx_rate_bps': stats['theoretical_tx_rate_bps'],
+ 'theoretical_tx_rate_pps': stats['theoretical_tx_rate_pps']}
+
+ if self.config.periodic_gratuitous_arp:
+ retDict['garp_total_tx_rate'] = stats['garp_total_tx_rate']
tx_keys = ['total_pkts', 'total_pkt_bytes', 'pkt_rate', 'pkt_bit_rate']
rx_keys = tx_keys + ['dropped_pkts']
else:
retDict['overall'] = retDict[ports[0]]
retDict['overall']['drop_rate_percent'] = self.__get_dropped_rate(retDict['overall'])
+
+ if 'overall_hdrh' in stats:
+ retDict['overall']['hdrh'] = stats.get('overall_hdrh', None)
+ decoded_histogram = HdrHistogram.decode(retDict['overall']['hdrh'])
+ retDict['overall']['rx']['lat_percentile'] = {}
+ # override min max and avg from hdrh (only if histogram is valid)
+ if decoded_histogram.get_total_count() != 0:
+ retDict['overall']['rx']['min_delay_usec'] = decoded_histogram.get_min_value()
+ retDict['overall']['rx']['max_delay_usec'] = decoded_histogram.get_max_value()
+ retDict['overall']['rx']['avg_delay_usec'] = decoded_histogram.get_mean_value()
+ for percentile in self.config.lat_percentiles:
+ retDict['overall']['rx']['lat_percentile'][percentile] = \
+ decoded_histogram.get_value_at_percentile(percentile)
+ else:
+ for percentile in self.config.lat_percentiles:
+ retDict['overall']['rx']['lat_percentile'][percentile] = 'n/a'
return retDict
def __convert_rates(self, rate):
'min_delay_usec': interface['rx']['min_delay_usec'],
}
+ if key == 'overall':
+ if 'hdrh' in interface:
+ stats[key]['hdrh'] = interface.get('hdrh', None)
+ decoded_histogram = HdrHistogram.decode(stats[key]['hdrh'])
+ stats[key]['lat_percentile'] = {}
+ # override min max and avg from hdrh (only if histogram is valid)
+ if decoded_histogram.get_total_count() != 0:
+ stats[key]['min_delay_usec'] = decoded_histogram.get_min_value()
+ stats[key]['max_delay_usec'] = decoded_histogram.get_max_value()
+ stats[key]['avg_delay_usec'] = decoded_histogram.get_mean_value()
+ for percentile in self.config.lat_percentiles:
+ stats[key]['lat_percentile'][percentile] = decoded_histogram.\
+ get_value_at_percentile(percentile)
+ else:
+ for percentile in self.config.lat_percentiles:
+ stats[key]['lat_percentile'][percentile] = 'n/a'
return stats
def __targets_found(self, rate, targets, results):
"""
self._modify_load(rate)
+ # There used to be a inconsistency in case of interface speed override.
+ # The emulated 'intf_speed' value is unknown to the T-Rex generator which
+ # refers to the detected line rate for converting relative traffic loads.
+ # Therefore, we need to convert actual rates here, in terms of packets/s.
+
+ for idx, str_rate in enumerate(self.gen.rates):
+ if str_rate.endswith('%'):
+ float_rate = float(str_rate.replace('%', '').strip())
+ pps_rate = self.__convert_rates({'rate_percent': float_rate})['rate_pps']
+ self.gen.rates[idx] = str(pps_rate) + 'pps'
+
# poll interval stats and collect them
for stats in self.run_traffic():
self.interval_collector.add(stats)
LOG.info('Average drop rate: %f', stats['overall']['drop_rate_percent'])
return stats, current_traffic_config['direction-total']
- @staticmethod
- def log_stats(stats):
+ def log_stats(self, stats):
"""Log estimated stats during run."""
- report = {
- 'datetime': str(datetime.now()),
- 'tx_packets': stats['overall']['tx']['total_pkts'],
- 'rx_packets': stats['overall']['rx']['total_pkts'],
- 'drop_packets': stats['overall']['rx']['dropped_pkts'],
- 'drop_rate_percent': stats['overall']['drop_rate_percent']
- }
- LOG.info('TX: %(tx_packets)d; '
- 'RX: %(rx_packets)d; '
- 'Est. Dropped: %(drop_packets)d; '
- 'Est. Drop rate: %(drop_rate_percent).4f%%',
- report)
+ # Calculate a rolling drop rate based on differential to
+ # the previous reading
+ cur_tx = stats['overall']['tx']['total_pkts']
+ cur_rx = stats['overall']['rx']['total_pkts']
+ delta_tx = cur_tx - self.prev_tx
+ delta_rx = cur_rx - self.prev_rx
+ drops = delta_tx - delta_rx
+ if delta_tx == 0:
+ LOG.info("\x1b[1mConfiguration issue!\x1b[0m (no transmission)")
+ sys.exit(0)
+ drop_rate_pct = 100 * (delta_tx - delta_rx)/delta_tx
+ self.prev_tx = cur_tx
+ self.prev_rx = cur_rx
+ LOG.info('TX: %15s; RX: %15s; (Est.) Dropped: %12s; Drop rate: %8.4f%%',
+ format(cur_tx, ',d'),
+ format(cur_rx, ',d'),
+ format(drops, ',d'),
+ drop_rate_pct)
def run_traffic(self):
"""Start traffic and return intermediate stats for each interval."""
stats = self.runner.run()
+ self.prev_tx = 0
+ self.prev_rx = 0
while self.runner.is_running:
self.log_stats(stats)
yield stats
for idx, key in enumerate(["direction-forward", "direction-reverse"]):
tx_rate = results["stats"][str(idx)]["tx"]["total_pkts"] / self.config.duration_sec
rx_rate = results["stats"][str(1 - idx)]["rx"]["total_pkts"] / self.config.duration_sec
+
+ orig_rate = self.run_config['rates'][idx]
+ if self.config.periodic_gratuitous_arp:
+ orig_rate['rate_pps'] = float(
+ orig_rate['rate_pps']) - self.config.gratuitous_arp_pps
+
r[key] = {
- "orig": self.__convert_rates(self.run_config['rates'][idx]),
+ "orig": self.__convert_rates(orig_rate),
"tx": self.__convert_rates({'rate_pps': tx_rate}),
"rx": self.__convert_rates({'rate_pps': rx_rate})
}
+ if self.config.periodic_gratuitous_arp:
+ r['garp-direction-total'] = {
+ "orig": self.__convert_rates({'rate_pps': self.config.gratuitous_arp_pps * 2}),
+ "tx": self.__convert_rates({'rate_pps': results["stats"]["garp_total_tx_rate"]}),
+ "rx": self.__convert_rates({'rate_pps': 0})
+ }
+
total = {}
for direction in ['orig', 'tx', 'rx']:
total[direction] = {}
total[direction][unit] = sum([float(x[direction][unit]) for x in list(r.values())])
r['direction-total'] = total
+
return r
def insert_interface_stats(self, pps_list):
for chain_idx in range(self.config.service_chain_count)]
# note that we need to make a copy of the ifs list so that any modification in the
# list from pps will not change the list saved in self.ifstats
- self.pps_list = [PacketPathStats(list(ifs)) for ifs in self.ifstats]
+ self.pps_list = [PacketPathStats(self.config, list(ifs)) for ifs in self.ifstats]
# insert the corresponding pps in the passed list
pps_list.extend(self.pps_list)
]
"""
if diff:
- stats = self.gen.get_stats()
+ stats = self.gen.get_stats(self.ifstats)
for chain_idx, ifs in enumerate(self.ifstats):
# each ifs has exactly 2 InterfaceStats and 2 Latency instances
# corresponding to the
Code Review / nfvbench.git / blobdiff