From: Rubens Figueiredo <rubens.figueiredo@bisdn.de>
To: users@dpdk.org
Subject: Trex with mlx5 driver - Multiple streams with different VLAN priority causes high CPU utilization
Date: Wed, 17 Apr 2024 19:06:39 +0200 [thread overview]
Message-ID: <0afcef7d-08a5-5696-ef13-a1ba4ad9ace2@bisdn.de> (raw)
In-Reply-To: <7efda351-e554-4120-5a61-3b0a534189e2@bisdn.de>
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Hello community,
I am facing a strange issue in the Trex stateless code, version v3.02
and v3.04. I am using the Mellanox Cx-5, and have created two VFs on top
of the PF 0. The mlx5_core version I am using is the 5.7-1.0.2, and the
ofed version is MLNX_OFED_LINUX-5.7-1.0.2.0 (OFED-5.7-1.0.2).
I have created the following issue in the trex-core repository
[here](https://github.com/cisco-system-traffic-generator/trex-core/issues/1124),
and was recommended to post the issue in here. In the github issue you
see screenshots of the issue I am facing.
I am trying to create two parallel streams with different VLAN
priorities, but the load generated is not what I expect it to be, and
CPU util. seems incredibly high (~99%).
I have reproduced this issue with the --software and non software version.
The script I used is below.
|import stl_path from trex.stl.api import * import time import pprint
from ipaddress import ip_address, ip_network import argparse import
configparser import os import json def get_packet(tos, mac_dst, ip_src,
size): # pkt = Ether(src="02:00:00:00:00:01",dst="00:00:00:01:00:01") /
IP(src="10.0.0.2", tos=tos) / UDP(sport=4444, dport=4444) pkt = (
Ether(src="00:01:00:00:00:02", dst=mac_dst) #
Ether(dst="11:11:11:11:11:11") # / Dot1AD(vlan=0) / Dot1Q(vlan=0,
prio=tos) / IP(src=ip_src) / UDP(sport=4444, dport=4444) ) pad = max(0,
size - len(pkt)) * "x" return pkt / pad def main(): """ """ tx_port = 0
rx_port = 1 c = STLClient() # connect to server c.connect() # prepare
our ports c.reset(ports=[tx_port, rx_port]) streams = [] s = STLStream(
packet=STLPktBuilder( pkt=get_packet(4,"00:11:22:33:44:55",
"10.1.0.2",512), # vm = vm, ), isg=0 * 1000000,
mode=STLTXCont(pps=1.2*10**6), # flow_stats = STLFlowLatencyStats(pg_id
= 0) flow_stats = STLFlowStats(pg_id=0), ) streams.append(s) s2 =
STLStream( packet=STLPktBuilder( pkt=get_packet(2,"00:11:22:33:44:55",
"10.1.0.2",512), # vm = vm, ), isg=0 * 1000000,
mode=STLTXCont(pps=1.2*10**6), # flow_stats = STLFlowLatencyStats(pg_id
= 0) flow_stats = STLFlowStats(pg_id=1), ) streams.append(s2)
c.add_streams(streams, ports=[tx_port]) c.clear_stats()
c.start(ports=[tx_port], duration=60, mult="25gbpsl1")
c.wait_on_traffic(ports=[tx_port, rx_port]) stats = c.get_stats()
print(stats) if __name__ == "__main__": main() And the configuration is |
|- port_limit: 2 version: 2 port_bandwidth_gb: 100 interfaces:
["3b:00.2", "3b:00.3"] port_info: - dest_mac: 00:00:00:00:00:01 src_mac:
00:01:00:00:00:01 - dest_mac: 00:00:00:00:00:02 src_mac:
00:01:00:00:00:02 c: 14 platform: master_thread_id: 8 latency_thread_id:
27 dual_if: - socket: 0 threads:
[9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]|
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next parent reply other threads:[~2024-04-17 17:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <7efda351-e554-4120-5a61-3b0a534189e2@bisdn.de>
2024-04-17 17:06 ` Rubens Figueiredo [this message]
2024-04-18 12:48 ` Dariusz Sosnowski
2024-04-18 13:21 ` Rubens Figueiredo
2024-04-19 12:31 ` Dariusz Sosnowski
2024-04-19 12:44 ` Rubens Figueiredo
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