From 27a56cad3679e4decbcca90acfb22c55a22153e0 Mon Sep 17 00:00:00 2001 From: Vratko Polak Date: Fri, 30 Nov 2018 14:49:10 +0100 Subject: PLRsearch: Initial implementation and suites Missing bits: - Add up-to-date .rst document (in child Change). - Prepare for releasing to PyPI.org (in child Change): -- Either copy dependencies from MLRsearch, or list in requirements. -- Perhaps move common dependencies to separate package for both search to depend on. -- All the other metadata stuff. Jira: CSIT-1276 Change-Id: I277efdb63dbb90b30e11f4e30a82e2130ac8efc3 Signed-off-by: Vratko Polak --- resources/libraries/python/TrafficGenerator.py | 44 ++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'resources/libraries/python/TrafficGenerator.py') diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py index b5558e663d..60915117fc 100644 --- a/resources/libraries/python/TrafficGenerator.py +++ b/resources/libraries/python/TrafficGenerator.py @@ -25,6 +25,7 @@ from .topology import Topology from .MLRsearch.AbstractMeasurer import AbstractMeasurer from .MLRsearch.MultipleLossRatioSearch import MultipleLossRatioSearch from .MLRsearch.ReceiveRateMeasurement import ReceiveRateMeasurement +from .PLRsearch.PLRsearch import PLRsearch __all__ = ['TGDropRateSearchImpl', 'TrafficGenerator', 'OptimizedSearch'] @@ -757,3 +758,46 @@ class OptimizedSearch(object): result = algorithm.narrow_down_ndr_and_pdr( minimum_transmit_rate, maximum_transmit_rate, packet_loss_ratio) return result + + @staticmethod + def perform_soak_search( + frame_size, traffic_type, minimum_transmit_rate, + maximum_transmit_rate, plr_target=1e-7, tdpt=0.2, + initial_count=50, timeout=1800.0): + """Setup initialized TG, perform soak search, return avg and stdev. + + :param frame_size: Frame size identifier or value [B]. + :param traffic_type: Module name as a traffic type identifier. + See resources/traffic_profiles/trex for implemented modules. + :param minimum_transmit_rate: Minimal bidirectional + target transmit rate [pps]. + :param maximum_transmit_rate: Maximal bidirectional + target transmit rate [pps]. + :param plr_target: Fraction of packets lost to achieve [1]. + :param tdpt: Trial duration per trial. + The algorithm linearly increases trial duration with trial number, + this is the increment between succesive trials, in seconds. + :param initial_count: Offset to apply before the first trial. + For example initial_count=50 makes first trial to be 51*tdpt long. + This is needed because initial "search" phase of integrator + takes significant time even without any trial results. + :param timeout: The search will stop after this overall time [s]. + :type frame_size: str or int + :type traffic_type: str + :type minimum_transmit_rate: float + :type maximum_transmit_rate: float + :type plr_target: float + :type initial_count: int + :type timeout: float + :returns: Average and stdev of estimated bidirectional rate giving PLR. + :rtype: 2-tuple of float + """ + tg_instance = BuiltIn().get_library_instance( + 'resources.libraries.python.TrafficGenerator') + tg_instance.set_rate_provider_defaults(frame_size, traffic_type) + algorithm = PLRsearch( + measurer=tg_instance, trial_duration_per_trial=tdpt, + packet_loss_ratio_target=plr_target, + trial_number_offset=initial_count, timeout=timeout) + result = algorithm.search(minimum_transmit_rate, maximum_transmit_rate) + return result -- cgit 1.2.3-korg