From 4c8f968b405c065fec0a4b8ac41ab164d5189241 Mon Sep 17 00:00:00 2001 From: bmichalo Date: Tue, 2 Aug 2016 15:03:36 -0400 Subject: pkt_gen: MoonGen start rates not correct The VSPERF traffic profile for starting rate is in a percentage of line rate. MoonGen programs its starting rate as Mpps. Therefore the traffic profile for VSPERF needs to be converted to a MoonGen format. There was a hardcoding of 14.88 that was used for the starting frame rate for all frame sizes. This needs to be corrected to take into account all frame sizes. JIRA: VSPERF-350 Change-Id: Ied71668a560d7d2b03483f9a1192dd2fb4965996 Signed-off-by: bmichalo --- tools/pkt_gen/moongen/moongen.py | 27 +++++++++++++++++++++------ 1 file changed, 21 insertions(+), 6 deletions(-) (limited to 'tools/pkt_gen') diff --git a/tools/pkt_gen/moongen/moongen.py b/tools/pkt_gen/moongen/moongen.py index efd8e004..e14c6a79 100644 --- a/tools/pkt_gen/moongen/moongen.py +++ b/tools/pkt_gen/moongen/moongen.py @@ -20,10 +20,11 @@ Moongen Traffic Generator Model """ # python imports -import logging from collections import OrderedDict -import subprocess +import logging +import math import re +import subprocess # VSPerf imports from conf import settings @@ -49,6 +50,13 @@ class Moongen(ITrafficGenerator): self._moongen_user = settings.getValue('TRAFFICGEN_MOONGEN_USER') self._moongen_ports = settings.getValue('TRAFFICGEN_MOONGEN_PORTS') + if settings.getValue('TRAFFICGEN_MOONGEN_LINE_SPEED_GBPS') == '10': + self._moongen_line_speed = math.pow(10, 10) + else: + raise RuntimeError( + 'MOONGEN: Invalid line speed in configuration ' + \ + 'file (today 10Gbps supported)') + @property def traffic_defaults(self): """Default traffic values. @@ -157,10 +165,17 @@ class Moongen(ITrafficGenerator): if one_shot: out_file.write("oneShot = true,\n") - # Assume 10G line rates at the moment. Need to convert VSPERF - # frame_rate (percentage of line rate) to Mpps for Moongen + # Need to convert VSPERF frame_rate (percentage of line rate) + # to Mpps for Moongen + start_rate = str( + (traffic['frame_rate'] / 100) * (self._moongen_line_speed / \ + (8 * (traffic['l2']['framesize'] + 20)) / math.pow(10, 6))) + + logging.debug("startRate = " + start_rate) + + out_file.write("startRate = " + \ + start_rate + "\n") - out_file.write("startRate = " + str((traffic['frame_rate'] / 100) * 14.88) + "\n") out_file.write("}" + "\n") out_file.close() @@ -476,7 +491,7 @@ class Moongen(ITrafficGenerator): if results_match and parameters_match: # Assume for now 10G link speed max_theoretical_mfps = ( - (10000000000 / 8) / (frame_size + 20)) + (self._moongen_line_speed / 8) / (frame_size + 20)) moongen_results[ResultsConstants.THROUGHPUT_RX_FPS] = ( float(results_match.group(6)) * 1000000) -- cgit 1.2.3-korg