DPDK CPU settings
On the FortiGate-VM, a DPDK engine is attached to an IPS engine, which shares the same process and is mapped to a CPU. A processing pipeline of four stages handles a packet from RX to TX:
- DPDK RX
- vNP
- IPS
- DPDK TX
You can freely determine the CPUs enabled for each pipeline stage by running the following commands:
config dpdk cpus
set [X] [Y]
end
Here X is one of the pipeline stages: rx-cpus, vnp-cpus, ips-cpus, and tx-cpus.
Y is a string expression of CPU IDs, which contains comma-delimited individual CPU IDs or ranges of CPU IDs separated by a dash.
The example enables CPUs 0, 2, 4, 6, 7, 8, 9. 10, and 15 to run the vNP pipeline stage:
set vnp-cpus 0,2,4,6-10,15
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You must enable at least one CPU for each pipeline stage. Otherwise, DPDK early initialization fails. |