[dpdk-dev] [RFC PATCH 0/1] Add l2reflect measurement application
Moessbauer, Felix
felix.moessbauer at siemens.com
Fri Jul 3 18:07:56 CEST 2020
> 03/07/2020 17:18, Felix Moessbauer:
> > Dear Maintainers,
> >
> > this patch adds a measurement application to benchmark the latency of
> > transmitting l2 packets via DPDK.
>
> Are you using a real time system to reduce latency?
Yes, we use a Debian buster with preempt-rt patched kernel.
Additionally, we use isolcpus for the RT relevant threads.
Apart from achieving low latency, we use this tool to measure the maximum latency over a long period of time.
This gives a good estimate that the system behaves deterministically, even under high load.
The tool also has a built-in mechanism to set trace points when a threshold is hit, to later inspect the kernel logs.
>
> > We add this application to the examples folder, as similar tools were
> > placed there as well.
>
> No, the examples are not supposed to be tools.
> They demonstrate some APIs.
>
> If it is a tool to measure performance, and can be used in a CI, I think it is better
> hosted in the directory apps/.
>
Ok, got it. There were some issues reported by checkpatch. I'll fix them and move to apps.
Thanks for the hint!
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