[dpdk-dev] running dpdk application on the same machine with other none dpdk application

[Rami Rosen]

Hi, Shirley

>In order to do that we isolated the dpdk application cores and disabled
hyperthreading for those cores.
>we are using 5 cores for the dpdk application (which is in fact 10 since
hyperthreading is disabled).

Short clarification question: did you do it with EAL paramater ?

Was it with
-l CORELIST / --lcores COREMAP EAL parameter ?

Did you try also the isolcpus Linux kernel parameter in order to isolate
cores from the general Linux scheduler?

Regards,
Rami Rosen


On Tue, Jan 29, 2019 at 6:32 PM Shirley Avishour <shirley at imvisiontech.com>
wrote:

> Hi,
> We are trying to run a dpdk based application one the same machine with
> other java based applications.
> In order to do that we isolated the dpdk application cores and disabled
> hyperthreading for those cores.
> But sporadically we encounter misses over the interface.
> We are running on a single socket cpu with 44 hyperthreaded cores.
> we are using 5 cores for the dpdk application (which is in fact 10 since
> hyperthreading is disabled).
> My guess is that probably GC (garbage collection) running from the kernel
> and perhaps over the isolated threads causing the misses.
> Is there a way to solve this issue? Is there a way to isolate cores for
> kernel processes/threads?
> Thanks in advance,
> Shirley.
>


-- 
regards,
Rami Rosen