diff options
Diffstat (limited to 'GPL/tools/trex/trex_astf_profile.py')
| -rw-r--r-- | GPL/tools/trex/trex_astf_profile.py | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/GPL/tools/trex/trex_astf_profile.py b/GPL/tools/trex/trex_astf_profile.py index 3f244ecf09..d08fb61778 100644 --- a/GPL/tools/trex/trex_astf_profile.py +++ b/GPL/tools/trex/trex_astf_profile.py @@ -79,6 +79,7 @@ def simple_burst( latency, async_start=False, traffic_directions=2, + delay=0.0, ): """Send traffic and measure packet loss and latency. @@ -98,8 +99,9 @@ def simple_burst( 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 @@ -111,11 +113,7 @@ def simple_burst( :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 multiplier: Multiplier of profile CPS. :param port_0: Port 0 on the traffic generator. @@ -123,6 +121,7 @@ def simple_burst( :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 @@ -132,6 +131,7 @@ def simple_burst( :type latency: bool :type async_start: bool :type traffic_directions: int + :type delay: float """ client = None total_received = 0 @@ -179,14 +179,12 @@ def simple_burst( # 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. @@ -196,8 +194,7 @@ def simple_burst( 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. @@ -208,7 +205,7 @@ def simple_burst( 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 ) @@ -442,6 +439,10 @@ def main(): 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() @@ -460,6 +461,7 @@ def main(): latency=args.latency, async_start=args.async_start, traffic_directions=args.traffic_directions, + delay=args.delay, ) |