#!/usr/bin/python3
-# Copyright (c) 2021 Cisco and/or its affiliates.
+# Copyright (c) 2022 Cisco and/or its affiliates.
#
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
#
import time
sys.path.insert(
- 0, u"/opt/trex-core-2.86/scripts/automation/trex_control_plane/interactive/"
+ 0, u"/opt/trex-core-2.88/scripts/automation/trex_control_plane/interactive/"
)
-from trex.astf.api import *
+from trex.astf.api import ASTFClient, ASTFProfile, TRexError
def fmt_latency(lat_min, lat_avg, lat_max, hdrh):
profile_file,
duration,
framesize,
+ n_data_frames,
multiplier,
port_0,
port_1,
latency,
async_start=False,
traffic_directions=2,
+ delay=0.0,
):
"""Send traffic and measure packet loss and latency.
Duration details:
Contrary to stateless mode, ASTF profiles typically limit the number
of flows/transactions that can happen.
- The caller is expected to set the duration parameter accordingly to
- this limit and multiplier, including any overheads.
+ The caller is expected to set the duration parameter to idealized value,
+ but set the delay arguments when TRex is expected
+ to finish processing replies later (including a window for latency).
See *_traffic_duration output fields for TRex's measurement
of the real traffic duration (should be without any inactivity overheads).
If traffic has not ended by the final time, the traffic
:param profile_file: A python module with T-rex traffic profile.
:param duration: Expected duration for all transactions to finish,
- assuming only tolerable duration stretching happens.
- This includes later start of later transactions
- (according to TPS multiplier) and expected duration of each transaction.
- Critically, this also includes any delay TRex shows when starting
- traffic (but not the similar delay during stopping).
+ without any TRex related delays, without even latency.
:param framesize: Frame size.
+ :param n_data_frames: Controls "size" of transaction for TPUT tests.
:param multiplier: Multiplier of profile CPS.
:param port_0: Port 0 on the traffic generator.
:param port_1: Port 1 on the traffic generator.
:param latency: With latency stats.
:param async_start: Start the traffic and exit.
:param traffic_directions: Bidirectional (2) or unidirectional (1) traffic.
+ :param delay: Time increase [s] for sleep duration.
:type profile_file: str
:type duration: float
:type framesize: int or str
+ :type n_data_frames: int
:type multiplier: int
:type port_0: int
:type port_1: int
:type latency: bool
:type async_start: bool
:type traffic_directions: int
+ :type delay: float
"""
client = None
total_received = 0
# TODO: key-values pairs to the profile file
# - ips ?
print(f"### Profile file:\n{profile_file}")
- profile = ASTFProfile.load(profile_file, framesize=framesize)
+ profile = ASTFProfile.load(
+ profile_file,
+ framesize=framesize,
+ n_data_frames=n_data_frames,
+ )
except TRexError:
print(f"Error while loading profile '{profile_file}'!")
raise
# Choose CPS and start traffic.
client.start(
mult=multiplier,
- # Increase the input duration slightly,
- # to ensure it does not end before sleep&stop below happens.
- duration=duration + 0.1 if duration > 0 else duration,
+ duration=duration,
nc=True,
latency_pps=int(multiplier) if latency else 0,
client_mask=2**len(ports)-1,
)
- time_start = time.monotonic()
+ time_stop = time.monotonic() + duration + delay
if async_start:
# For async stop, we need to export the current snapshot.
xsnap1 = client.ports[port_1].get_xstats().reference_stats
print(f"Xstats snapshot 1: {xsnap1!r}")
else:
- time.sleep(duration)
-
+ time.sleep(duration + delay)
# Do not block yet, the existing transactions may take long time
# to finish. We need an action that is almost reset(),
# but without clearing stats.
client.stop(block=True)
# Read the stats after the traffic stopped (or time up).
- stats[time.monotonic() - time_start] = client.get_stats(
+ stats[time.monotonic() - time_stop] = client.get_stats(
ports=ports
)
u"-s", u"--frame_size", required=True,
help=u"Size of a Frame without padding and IPG."
)
+ parser.add_argument(
+ u"--n_data_frames", type=int, default=5,
+ help=u"Use this many data frames per transaction and direction (TPUT)."
+ )
parser.add_argument(
u"-m", u"--multiplier", required=True, type=float,
help=u"Multiplier of profile CPS."
u"--traffic_directions", type=int, default=2,
help=u"Send bi- (2) or uni- (1) directional traffic."
)
+ parser.add_argument(
+ u"--delay", required=True, type=float, default=0.0,
+ help=u"Allowed time overhead, sleep time is increased by this [s]."
+ )
args = parser.parse_args()
profile_file=args.profile,
duration=args.duration,
framesize=framesize,
+ n_data_frames=args.n_data_frames,
multiplier=args.multiplier,
port_0=args.port_0,
port_1=args.port_1,
latency=args.latency,
async_start=args.async_start,
traffic_directions=args.traffic_directions,
+ delay=args.delay,
)
Code Review / csit.git / blobdiff