From 35175924550d67f98fb1c2c50b0634656d29169e Mon Sep 17 00:00:00 2001 From: Vratko Polak Date: Fri, 27 Apr 2018 15:11:12 +0200 Subject: CSIT-992: Add libraries for optimized search + Place the libraries into resources/libraries/python/search/. + Except OptimizedTrexSearch in TrafficGenerator.py + Change traffic generator to support floats for duration and warmup. + Remove explicit type conversions where not needed. + Add robot keywords to performance_utils.robot + for calling the optimized search. + for reporting the resulting values. + for checking the minimal performance has been reached. + for running five second "Traffic should pass with no loss" after the search. - Add methodology documentation in subsequent Change. - Add simulator for testing algorithm correctness in a subsequent Change. - Add tests using the libraries in subsequent Change. Change-Id: Ia041008382ee4c9a562172099aea794c854d5f2f Signed-off-by: Vratko Polak --- .../python/search/ReceiveRateMeasurement.py | 54 ++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 resources/libraries/python/search/ReceiveRateMeasurement.py (limited to 'resources/libraries/python/search/ReceiveRateMeasurement.py') diff --git a/resources/libraries/python/search/ReceiveRateMeasurement.py b/resources/libraries/python/search/ReceiveRateMeasurement.py new file mode 100644 index 0000000000..58aa819017 --- /dev/null +++ b/resources/libraries/python/search/ReceiveRateMeasurement.py @@ -0,0 +1,54 @@ +# Copyright (c) 2018 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +"""Module defining ReceiveRateMeasurement class.""" + + +class ReceiveRateMeasurement(object): + """Structure defining the result of single Rr measurement.""" + + def __init__(self, duration, target_tr, transmit_count, drop_count): + """Constructor, normalize primary and compute secondary quantities. + + :param duration: Measurement duration [s]. + :param target_tr: Target transmit rate [pps]. + If bidirectional traffic is measured, this is bidirectional rate. + :param transmit_count: Number of packets transmitted [1]. + :param drop_count: Number of packets transmitted but not received [1]. + :type duration: float + :type target_tr: float + :type transmit_count: int + :type drop_count: int + """ + self.duration = float(duration) + self.target_tr = float(target_tr) + self.transmit_count = int(transmit_count) + self.drop_count = int(drop_count) + self.receive_count = transmit_count - drop_count + self.transmit_rate = transmit_count / self.duration + self.drop_rate = drop_count / self.duration + self.receive_rate = self.receive_count / self.duration + self.drop_fraction = float(self.drop_count) / self.transmit_count + # TODO: Do we want to store also the real time (duration + overhead)? + + def __str__(self): + """Return string reporting input and drop fraction.""" + return "d={dur!s},Tr={rate!s},Df={frac!s}".format( + dur=self.duration, rate=self.target_tr, frac=self.drop_fraction) + + def __repr__(self): + """Return string evaluable as a constructor call.""" + return ("ReceiveRateMeasurement(duration={dur!r},target_tr={rate!r}" + ",transmit_count={trans!r},drop_count={drop!r})".format( + dur=self.duration, rate=self.target_tr, + trans=self.transmit_count, drop=self.drop_count)) -- cgit 1.2.3-korg