Re: [dpdk-dev] About round trip latency with DPDK

[Kai Zhang <zhang.4522@osu.edu>]

Thanks!

I have found the problem. It is that I used clock_gettime() to measure the
latency. With rte_rdtsc(), the round trip latency is measured to be less
than 10 microseconds.

Thanks very much,
Kai


On Thu, Jul 24, 2014 at 8:48 AM, Wodkowski, PawelX <
pawelx.wodkowski@intel.com> wrote:

> Refer to DPDK getting started guide paragraph 5.4. It might help.
> Also it might be easier to do write simple application that send a packet
> on port 1 and rx it on port 2 in separate threads on separate cores (simple
> physical loop). You can then add timestamp and send packet back and see how
> long it will take TX to RX and RX to TX process.
>
> Pawel Wodkowski
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