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1.Hardware
Server: Dell R7615
CPU: AMD Epyc 9654P
Memory: 384GB
NUMA: 1
NIC: Connect-X 6LX
2.Software Versions
OS: Ubuntu 22.04.2 LTS
Kernel: 5.15
Openstack Version: Yoga
OVN: 22.03
OVS: 2.17.5
MLNX OFED Driver: 5.8-2.0.3
Firmware: 26.35.1012 (DEL0000000031)
3.SmartNIC Configuration
3-1. Driver
vport_match_mode: metadata
steering_mode: smfs
ct_action_on_nat_conns: disable
ct_labels_mapping: disable
3-2. Devlink Param
num_of_groups: 15
3-3. MSTConfig
PF_NUM_PF_MSIX_VALID: False(0)
STRICT_VF_MSIX_NUM: False(0)
NUM_PF_MSIX_VALID: True(1)
NUM_PF_MSIX: 127
NUM_VF_MSIX: 127
PF_NUM_PF_MSIX: 63
DYNAMIC_VF_MSIX_TABLE: False(0)
4.OpenStack Configuration
Using OVN Mechanism Driver
Applying HWOL during host configuration
Applying OVN ACL and Conntrack Offload
5.CPU Pinning and Multi Channel
Linux Scheduler, Systemd: 8 Cores Pinned ( isolcpus )
HWOL worker Queue: 6 Cores Pinned
Interrupt: 2 Cores Pinned
PF Channel: Combined 4
Representation Port: Combined 2
6.Guest VM
Flavor: 16 vCPU, 32GB
Driver: 5.8-2.0.3
OS: Ubuntu 20.03
7.Performance Testing
Packet Size: 64 bytes
Protocol: UDP
Source IP & Port: 100EA
7.1 Provider Network Performance Testing
Load: 10 Mpps
Packet processing rate per interface
- OVS Internal Bridge: 10 Mpps
- OVN Patch Port: 7.71 Mpps
- Representation Port: 7.69 Mpps
- Guest VM performance: 7.72 Mpps
7.2 Overlay Network + Floating IP
Load: 6 Mpps
Packet processing rate per interface
- OVS Internal Bridge: 6 Mpps
- OVN Patch Port: 5.11 Mpps
- Representation Port: 5.11 Mpps
- Guest VM performance: 5.10 Mpps
In the above environment, performance testing was conducted by generating 64-byte UDP packets. Packet processing degradation was observed without any CPU bottlenecks or packet drops. HWOL Conntrack, NAT, and Geneve Offload are functioning properly. What other aspects would you like to verify?