[dpdk-users] high jitter in dpdk kni

Jay Rolette rolette at infiniteio.com
Mon Jan 25 15:15:42 CET 2016


On Mon, Jan 25, 2016 at 7:49 AM, Masoud Moshref Javadi <
masood.moshref.j at gmail.com> wrote:

> Thanks.
> For me the easiest solution is to sacrifice a core and set
> CONFIG_RTE_KNI_PREEMPT_DEFAULT
> to 'n'. I can confirm that this reduced the delay to 0.1ms
>

Make sure you take a look at the throughput you get with that change. In my
case, I found it reduced the latency, but lowered my aggregate throughput:

http://dpdk.org/ml/archives/dev/2015-June/018858.html

Jay


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