diff options
Diffstat (limited to 'yardstick/network_services')
-rw-r--r-- | yardstick/network_services/traffic_profile/rfc2544.py | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/yardstick/network_services/traffic_profile/rfc2544.py b/yardstick/network_services/traffic_profile/rfc2544.py index 987029373..4b339c2ed 100644 --- a/yardstick/network_services/traffic_profile/rfc2544.py +++ b/yardstick/network_services/traffic_profile/rfc2544.py @@ -19,6 +19,7 @@ from trex_stl_lib import trex_stl_client from trex_stl_lib import trex_stl_packet_builder_scapy from trex_stl_lib import trex_stl_streams +from yardstick.common import constants from yardstick.network_services.traffic_profile import trex_traffic_profile @@ -140,7 +141,8 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): streams.extend(_streams) return trex_stl_streams.STLProfile(streams) - def _create_imix_data(self, imix): + def _create_imix_data(self, imix, + weight_mode=constants.DISTRIBUTION_IN_PACKETS): """Generate the IMIX distribution for a STL profile The input information is the framesize dictionary in a test case @@ -159,6 +161,20 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): E.g.: imix_count = {64: 25, 128: 75} + The weight mode is described in [1]. There are two ways to describe the + weight of the packets: + - Distribution in packets: the weight defines the percentage of + packets sent per packet size. IXIA uses this definition. + - Distribution in bytes: the weight defines the percentage of bytes + sent per packet size. + + Packet size # packets D. in packets Bytes D. in bytes + 40 7 58.33% 280 7% + 576 4 33.33% 2304 56% + 1500 1 8.33% 1500 37% + + [1] https://en.wikipedia.org/wiki/Internet_Mix + :param imix: (dict) IMIX size and weight """ imix_count = {} @@ -173,8 +189,16 @@ class RFC2544Profile(trex_traffic_profile.TrexProfile): imix_sum = 100 weight_normalize = float(imix_sum) / 100 - return {size: float(weight) / weight_normalize - for size, weight in imix_count.items()} + imix_dip = {size: float(weight) / weight_normalize + for size, weight in imix_count.items()} + + if weight_mode == constants.DISTRIBUTION_IN_BYTES: + return imix_dip + + byte_total = sum([int(size) * weight + for size, weight in imix_dip.items()]) + return {size: (int(size) * weight) / byte_total + for size, weight in imix_dip.items()} def _create_vm(self, packet_definition): """Create the STL Raw instructions""" |