Introduction
The R3 release will evaluation the throughput and packet forwarding performance of the Mellanox BlueField SmartNIC card.
A DPDK based Open vSwitch (OVS-DPDK) is used as the virtual switch, and the network traffic is virtualized with the VXLAN encapsulation.
Currently, the community version OVS-DPDK is considered experimental and not mature enough, it only supports "partial offload" which cannot
utilize the full performance advantage of Mellanox NICs. Thus the OVS-DPDK we used is a fork of the community Open vSwitch. We develop
our own offload code which enables the full hardware offload with DPDK rte_flow APIs.
We have plans to open source this OVS-DPDK. More detailed will be provided in the future documentation.
Akraino Test Group Information
Overall Test Architecture
To deploy the Test architecture, we use a private Jenkins and an Intel server equipped with a BlueField v1 SmartNIC.
We use Ansible to automatically setup the filesystem image and install the OVS-DPDK in the SmartNICs.
The File Server is a simple Nginx based web server where stores the BF drivers, FS image.
The Git repo is our own git repo where hosts OVS-DPDK and DPDK code.
The Jenkins will use ansible plugin to download BF drivers and FS image in the test server and setup the environment
according to the ansible playbook.
Image | download link |
---|---|
BlueField-2.5.1.11213.tar.xz | https://www.mellanox.com/products/software/bluefield |
core-image-full-dev-BlueField-2.5.1.11213.2.5.3.tar.xz | https://www.mellanox.com/products/software/bluefield |
mft-4.14.0-105-x86_64-deb.tgz | |
MLNX_OFED_LINUX-5.0-2.1.8.0-debian8.11-x86_64.tgz |
Test Bed
The testbed setup is shown in the above diagram. DUT stands for Device Under Test
Test Framework
Type | Description |
---|---|
SmartNICs | BlueField v1, 25Gbps |
DPDK | version 19.11 |
vSwitch | OVS-DPDK 2.12 with VXLAN DECAP/ENCAP offload enabled. |
root@bluefield:/home/ovs-dpdk# ovs-vsctl show 2dccd148-526c-44a5-9351-67b04c5e2da4 Bridge br-int datapath_type: netdev Port vxlan-vtp Interface vxlan-vtp type: vxlan options: {dst_port="4789", key=flow, local_ip="192.168.1.1", remote_ip=flow, tos=inherit} Port br-int Interface br-int type: internal Port pf1hpf Interface pf1hpf type: dpdk options: {dpdk-devargs="class=eth,mac=ae:d8:8a:c5:22:fb"} Bridge br-ex datapath_type: netdev Port br-ex Interface br-ex type: internal Port p1 Interface p1 type: dpdk options: {dpdk-devargs="class=eth,mac=98:03:9b:af:7b:0b"}
root@bluefield:/home/ovs-dpdk# ovs-vsctl list open_vswitch _uuid : 2dccd148-526c-44a5-9351-67b04c5e2da4 bridges : [22334686-733a-445e-9130-a42009a3586e, 38af610d-01f7-497d-878b-c6b6a44abf6a] cur_cfg : 10 datapath_types : [netdev, system] datapaths : {} db_version : [] dpdk_initialized : true dpdk_version : "DPDK 19.11.0" external_ids : {} iface_types : [dpdk, dpdkr, dpdkvhostuser, dpdkvhostuserclient, erspan, geneve, gre, internal, ip6erspan, ip6gre, lisp, patch, stt, system, tap, vxlan] manager_options : [] next_cfg : 10 other_config : {dpdk-extra="-w 03:00.1,representor=[0,65535] --legacy-mem ", dpdk-init="true", hw-offload="true"} ovs_version : [] ssl : [] statistics : {cpu="16", file_systems="/,13521220,3918464 /data,243823,2064 /boot,357176,61104", load_average="1.41,1.37,1.36", memory="16337652,5589928,1707640,0,0", process_ovs-vswitchd="5959388,256352,11515170,0,11484792,11484792,7", process_ovsdb-server="12620,6260,13190,0,68233832,68233832,6"} system_type : [] system_version : []
Traffic Generator
We will use DPDK pktgen as the Traffic Generator.
Test API description
The test is to evaluate the performance of SmartNIC offloading.
N/A
Test Dashboards
Open vSwitch itself contains a test suite for functional test, the link is http://docs.openvswitch.org/en/latest/topics/testing/
We have ran the basic test suite according to the link.
By running,
make check TESTSUITEFLAGS=-j8
We got the below results.
Total Tests | Test Executed | Pass | Fail | In Progress |
---|---|---|---|---|
2225 | 2200 | 2198 | 2 | 0 |
The two failed cases are about sFlow sampling. We are investigating the internal reason.
25 cases are skipped due to the configuration.
Test Results
Single PF
OVS-DPDK | OF rules | Traffic | pktgen pps | received pps (hw) | received pps (no hw) | PMD idle cycles w/ hw offload | PMD idle cycles w/o hw offload |
---|---|---|---|---|---|---|---|
1 PMD(s) | Directly forwarding without match "in_port=vxlan-vtp, actions=output: pf1hpf" | single TCP flow with VXLAN encapsulation | 24.6Mpps | 23.9Mpps | 745156 | 99% | 0% |
Single PF, Single VF
OVS-DPDK | OF rules | Traffic | pktgen pps | received pps (hw) | received pps (no hw) | PMD idle cycles w/ hw offload | PMD idle cycles w/o hw offload |
---|---|---|---|---|---|---|---|
1 PMD(s) | Directly forwarding without match "in_port=vxlan-vtp, actions=output: pf1vf0" | single TCP flow with VXLAN encapsulation | 24.6Mpps | 23.8Mpps | 747097 | 99% | 0% |
1 PMD(s) | match and forwarding 100 rules "in_port=vxlan-vtp,ip,nw_dst=10.1.1.[1-100] actions=pf1vf0" | 100 flows with nw_dst=10.1.1.[1-100] | 24.6Mpps | 21.6Mpps (100 megaflows offloaded) | 624161 | 99% | 0% |
1 PMD(s) | match and forwarding 1000 rules "in_port=vxlan-vtp,ip,nw_dst=10.1.[1-10].[1-100] actions=pf1vf0" | 1000 flows with nw_dst=10.1.[1-10].[1-100] 891 flows (due to pktgen limit, only 891 flows are loaded) | 24.6Mpps | 23.3Mpps (891 megaflows offloaded) | 524144 | 99% | 0% |
Single PF, 4 VFs (only test with offloaded)
OVS-DPDK | OF rules | Traffic | pktgen pps | received pps (VF0) | received pps (VF1) | received pps (VF2) | received pps (VF3) | in total |
---|---|---|---|---|---|---|---|---|
1 PMD(s) | match and forwarding 1000 rules "in_port=vxlan-vtp,ip,nw_dst=10.1.[1-10].[1-25] actions=pf1vf0" "in_port=vxlan-vtp,ip,nw_dst=10.1.[1-10].[26-50] actions=pf1vf1" "in_port=vxlan-vtp,ip,nw_dst=10.1.[1-10].[51-75] actions=pf1vf2" "in_port=vxlan-vtp,ip,nw_dst=10.1.[1-10].[75-100] actions=pf1vf3" | 1000 flows with nw_dst=10.1.[1-10].[1-100] 891 flows (due to pktgen limit, only 891 flows are loaded) | 24.6Mpps | 5891903 | 5781310 | 5767825 | 5380159 | 23258808 ~ 23.2Mpps |
Additional Testing
n/a
Bottlenecks/Errata
n/a