diff options
Diffstat (limited to 'resources/libraries/python/DropRateSearch.py')
| -rw-r--r-- | resources/libraries/python/DropRateSearch.py | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/resources/libraries/python/DropRateSearch.py b/resources/libraries/python/DropRateSearch.py index 354e7d493c..2de8e3c174 100644 --- a/resources/libraries/python/DropRateSearch.py +++ b/resources/libraries/python/DropRateSearch.py @@ -109,7 +109,7 @@ class DropRateSearch(object): @abstractmethod def measure_loss(self, rate, frame_size, loss_acceptance, - loss_acceptance_type, traffic_type): + loss_acceptance_type, traffic_type, skip_warmup=False): """Send traffic from TG and measure count of dropped frames. :param rate: Offered traffic load. @@ -117,11 +117,13 @@ class DropRateSearch(object): :param loss_acceptance: Permitted drop ratio or frames count. :param loss_acceptance_type: Type of permitted loss. :param traffic_type: Traffic profile ([2,3]-node-L[2,3], ...). + :param skip_warmup: Start TRex without warmup traffic if true. :type rate: int :type frame_size: str :type loss_acceptance: float :type loss_acceptance_type: LossAcceptanceType :type traffic_type: str + :type traffic_type: bool :returns: Drop threshold exceeded? (True/False) :rtype bool """ @@ -415,12 +417,11 @@ class DropRateSearch(object): if prev_rate is None: self._search_result = SearchResults.FAILURE self._search_result_rate = None - return # else we found the rate, which is value from previous run else: self._search_result = SearchResults.SUCCESS self._search_result_rate = prev_rate - return + return # there was no loss / loss below acceptance criteria elif res: prev_rate = rate @@ -480,17 +481,20 @@ class DropRateSearch(object): SearchResults.SUSPICIOUS]: return self._search_result_rate, self.get_latency() - def binary_search(self, b_min, b_max, traffic_type, skip_max_rate=False): + def binary_search(self, b_min, b_max, traffic_type, skip_max_rate=False, + skip_warmup=False): """Binary search of rate with loss below acceptance criteria. :param b_min: Min range rate. :param b_max: Max range rate. :param traffic_type: Traffic profile. :param skip_max_rate: Start with max rate first + :param skip_warmup: Start TRex without warmup traffic if true. :type b_min: float :type b_max: float :type traffic_type: str :type skip_max_rate: bool + :type skip_warmup: bool :returns: nothing :raises: ValueError if input values are not valid """ @@ -502,22 +506,17 @@ class DropRateSearch(object): if float(b_max) < float(b_min): raise ValueError("Min rate is greater than max rate") - # binary search - if skip_max_rate: - # rate is half of interval + start of interval - rate = ((float(b_max) - float(b_min)) / 2) + float(b_min) - else: - # rate is max of interval - rate = float(b_max) + # rate is half of interval + start of interval if not using max rate + rate = ((float(b_max) - float(b_min)) / 2) + float(b_min) \ + if skip_max_rate else float(b_max) + # rate diff with previous run rate_diff = abs(self._last_binary_rate - rate) # convergence criterium if float(rate_diff) < float(self._binary_convergence_threshold): - if not self._search_result_rate: - self._search_result = SearchResults.FAILURE - else: - self._search_result = SearchResults.SUCCESS + self._search_result = SearchResults.SUCCESS \ + if self._search_result_rate else SearchResults.FAILURE return self._last_binary_rate = rate @@ -527,17 +526,17 @@ class DropRateSearch(object): res.append(self.measure_loss(rate, self._frame_size, self._loss_acceptance, self._loss_acceptance_type, - traffic_type)) + traffic_type, skip_warmup=skip_warmup)) res = self._get_res_based_on_search_type(res) # loss occurred and it was above acceptance criteria if not res: - self.binary_search(b_min, rate, traffic_type, True) + self.binary_search(b_min, rate, traffic_type, True, True) # there was no loss / loss below acceptance criteria else: self._search_result_rate = rate - self.binary_search(rate, b_max, traffic_type, True) + self.binary_search(rate, b_max, traffic_type, True, True) def combined_search(self, start_rate, traffic_type): """Combined search of rate with loss below acceptance criteria. @@ -608,4 +607,3 @@ class DropRateSearch(object): return abs(num_b - num_a) <= max(rel_tol * max(abs(num_a), abs(num_b)), abs_tol) - |